20012211012321 has 24 divisors (see below), whose sum is σ = 31544536533120. Its totient is φ = 12124711418400.

The previous prime is 20012211012319. The next prime is 20012211012361. The reversal of 20012211012321 is 12321011221002.

20012211012321 is a `hidden beast` number, since 20 + 0 + 1 + 221 + 101 + 2 + 321 = 666.

It is not a de Polignac number, because 20012211012321 - 2¹ = 20012211012319 is a prime.

It is a super-2 number, since 2×20012211012321² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20012211012294 and 20012211012303.

It is not an unprimeable number, because it can be changed into a prime (20012211012361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32201625 + ... + 32817206.

It is an arithmetic number, because the mean of its divisors is an integer number (1314355688880).

Almost surely, 2^{20012211012321} is an apocalyptic number.

It is an amenable number.

20012211012321 is a deficient number, since it is larger than the sum of its proper divisors (11532325520799).

20012211012321 is a wasteful number, since it uses less digits than its factorization.

20012211012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65021957 (or 65021954 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20012211012321 its reverse (12321011221002), we get a palindrome (32333222233323).

The spelling of 20012211012321 in words is "twenty trillion, twelve billion, two hundred eleven million, twelve thousand, three hundred twenty-one".