21023211233229 has 4 divisors (see below), whose sum is σ = 28030948310976. Its totient is φ = 14015474155484.

The previous prime is 21023211233221. The next prime is 21023211233249. The reversal of 21023211233229 is 92233211232012.

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 21023211233229 - 2³ = 21023211233221 is a prime.

It is a super-2 number, since 2×21023211233229² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21023211233229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023211233221) 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, 3503868538869 + ... + 3503868538874.

It is an arithmetic number, because the mean of its divisors is an integer number (7007737077744).

Almost surely, 2^{21023211233229} is an apocalyptic number.

It is an amenable number.

21023211233229 is a deficient number, since it is larger than the sum of its proper divisors (7007737077747).

21023211233229 is an equidigital number, since it uses as much as digits as its factorization.

21023211233229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7007737077746.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 21023211233229 in words is "twenty-one trillion, twenty-three billion, two hundred eleven million, two hundred thirty-three thousand, two hundred twenty-nine".