21012212023302 has 16 divisors (see below), whose sum is σ = 42024490162992. Its totient is φ = 7004059655040.

The previous prime is 21012212023273. The next prime is 21012212023321. The reversal of 21012212023302 is 20332021221012.

It is a super-2 number, since 2×21012212023302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2010802 + ... + 6787322.

It is an arithmetic number, because the mean of its divisors is an integer number (2626530635187).

Almost surely, 2^{21012212023302} is an apocalyptic number.

21012212023302 is an abundant number, since it is smaller than the sum of its proper divisors (21012278139690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21012212023302 is a wasteful number, since it uses less digits than its factorization.

21012212023302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5509703.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21012212023302 its reverse (20332021221012), we get a palindrome (41344233244314).

The spelling of 21012212023302 in words is "twenty-one trillion, twelve billion, two hundred twelve million, twenty-three thousand, three hundred two".