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21022212202 = 231307335743
BaseRepresentation
bin10011100101000001…
…011000000001101010
32000021002000000202221
4103211001120001222
5321023141242302
613354002544254
71342643566255
oct234501300152
960232000687
1021022212202
118a085441a2
1240a836808a
131ca03c1124
141035d7609c
15830888937
hex4e505806a

21022212202 has 8 divisors (see below), whose sum is σ = 31534419456. Its totient is φ = 10510739052.

The previous prime is 21022212193. The next prime is 21022212209. The reversal of 21022212202 is 20221222012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21022212209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105258 + ... + 230485.

It is an arithmetic number, because the mean of its divisors is an integer number (3941802432).

Almost surely, 221022212202 is an apocalyptic number.

21022212202 is a deficient number, since it is larger than the sum of its proper divisors (10512207254).

21022212202 is a wasteful number, since it uses less digits than its factorization.

21022212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367052.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21022212202 its reverse (20221222012), we get a palindrome (41243434214).

The spelling of 21022212202 in words is "twenty-one billion, twenty-two million, two hundred twelve thousand, two hundred two".

Divisors: 1 2 31307 62614 335743 671486 10511106101 21022212202