21012022123331 has 8 divisors (see below), whose sum is σ = 21356560946784. Its totient is φ = 20667485862720.

The previous prime is 21012022123321. The next prime is 21012022123357. The reversal of 21012022123331 is 13332122021012.

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

It is a cyclic number.

It is not a de Polignac number, because 21012022123331 - 2²⁶ = 21011955014467 is a prime.

It is a super-2 number, since 2×21012022123331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21012022123297 and 21012022123306.

It is not an unprimeable number, because it can be changed into a prime (21012022123321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22960130 + ... + 23857736.

It is an arithmetic number, because the mean of its divisors is an integer number (2669570118348).

Almost surely, 2^{21012022123331} is an apocalyptic number.

21012022123331 is a deficient number, since it is larger than the sum of its proper divisors (344538823453).

21012022123331 is an equidigital number, since it uses as much as digits as its factorization.

21012022123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281421.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21012022123331 its reverse (13332122021012), we get a palindrome (34344144144343).

The spelling of 21012022123331 in words is "twenty-one trillion, twelve billion, twenty-two million, one hundred twenty-three thousand, three hundred thirty-one".