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10022222012021 = 25469939349279
BaseRepresentation
bin1001000111010111101011…
…1110111001111001110101
31022111010002212212102112122
42101311322332321321311
52303201002313341041
633152051211525325
72053040001336332
oct221657276717165
938433085772478
1010022222012021
11321444505760a
12115a459a59845
13579125ca096b
14269114581989
15125a7acc7c4b
hex91d7afb9e75

10022222012021 has 4 divisors (see below), whose sum is σ = 10022261616000. Its totient is φ = 10022182408044.

The previous prime is 10022222011999. The next prime is 10022222012087. The reversal of 10022222012021 is 12021022222001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10022222012021 - 242 = 5624175500917 is a prime.

It is a super-2 number, since 2×100222220120212 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10022222012221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19419941 + ... + 19929338.

It is an arithmetic number, because the mean of its divisors is an integer number (2505565404000).

Almost surely, 210022222012021 is an apocalyptic number.

It is an amenable number.

10022222012021 is a deficient number, since it is larger than the sum of its proper divisors (39603979).

10022222012021 is an equidigital number, since it uses as much as digits as its factorization.

10022222012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39603978.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10022222012021 its reverse (12021022222001), we get a palindrome (22043244234022).

The spelling of 10022222012021 in words is "ten trillion, twenty-two billion, two hundred twenty-two million, twelve thousand, twenty-one".

Divisors: 1 254699 39349279 10022222012021