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12010222021 = 71715746003
BaseRepresentation
bin10110010111101110…
…10111000111000101
31011000000100111022211
423023313113013011
5144044104101041
65303432423421
7603424126360
oct131367270705
934000314284
1012010222021
115103503626
1223b2247b71
131195303465
1481d11d0d7
154a45de481
hex2cbdd71c5

12010222021 has 4 divisors (see below), whose sum is σ = 13725968032. Its totient is φ = 10294476012.

The previous prime is 12010222019. The next prime is 12010222057. The reversal of 12010222021 is 12022201021.

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 12010222021 - 21 = 12010222019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12010221992 and 12010222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010222061) 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, 857872995 + ... + 857873008.

It is an arithmetic number, because the mean of its divisors is an integer number (3431492008).

Almost surely, 212010222021 is an apocalyptic number.

It is an amenable number.

12010222021 is a deficient number, since it is larger than the sum of its proper divisors (1715746011).

12010222021 is an equidigital number, since it uses as much as digits as its factorization.

12010222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715746010.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12010222021 its reverse (12022201021), we get a palindrome (24032423042).

The spelling of 12010222021 in words is "twelve billion, ten million, two hundred twenty-two thousand, twenty-one".

Divisors: 1 7 1715746003 12010222021