20001122012022 has 16 divisors (see below), whose sum is σ = 40069025740800. Its totient is φ = 6655910384552.

The previous prime is 20001122011979. The next prime is 20001122012023. The reversal of 20001122012022 is 22021022110002.

It is a junction number, because it is equal to n+sod(n) for n = 20001122011992 and 20001122012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001122012023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2782567638 + ... + 2782574825.

It is an arithmetic number, because the mean of its divisors is an integer number (2504314108800).

Almost surely, 2^{20001122012022} is an apocalyptic number.

20001122012022 is an abundant number, since it is smaller than the sum of its proper divisors (20067903728778).

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

20001122012022 is a wasteful number, since it uses less digits than its factorization.

20001122012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565143067.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001122012022 its reverse (22021022110002), we get a palindrome (42022144122024).

The spelling of 20001122012022 in words is "twenty trillion, one billion, one hundred twenty-two million, twelve thousand, twenty-two".