20121322321002 has 32 divisors (see below), whose sum is σ = 46266992658432. Its totient is φ = 5714524386864.

The previous prime is 20121322320989. The next prime is 20121322321063. The reversal of 20121322321002 is 20012322312102.

It is a super-2 number, since 2×20121322321002² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20121322321002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1434361558 + ... + 1434375585.

It is an arithmetic number, because the mean of its divisors is an integer number (1445843520576).

Almost surely, 2^{20121322321002} is an apocalyptic number.

20121322321002 is an abundant number, since it is smaller than the sum of its proper divisors (26145670337430).

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

20121322321002 is a wasteful number, since it uses less digits than its factorization.

20121322321002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868737322.

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

Adding to 20121322321002 its reverse (20012322312102), we get a palindrome (40133644633104).

The spelling of 20121322321002 in words is "twenty trillion, one hundred twenty-one billion, three hundred twenty-two million, three hundred twenty-one thousand, two".