20211001012122 has 32 divisors (see below), whose sum is σ = 40691671595520. Its totient is φ = 6692059738800.

The previous prime is 20211001012079. The next prime is 20211001012123. The reversal of 20211001012122 is 22121010011202.

It is not an unprimeable number, because it can be changed into a prime (20211001012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18512553 + ... + 19573875.

It is an arithmetic number, because the mean of its divisors is an integer number (1271614737360).

Almost surely, 2^{20211001012122} is an apocalyptic number.

20211001012122 is an abundant number, since it is smaller than the sum of its proper divisors (20480670583398).

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

20211001012122 is a wasteful number, since it uses less digits than its factorization.

20211001012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082498.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20211001012122 its reverse (22121010011202), we get a palindrome (42332011023324).

The spelling of 20211001012122 in words is "twenty trillion, two hundred eleven billion, one million, twelve thousand, one hundred twenty-two".