20200122121011 has 64 divisors (see below), whose sum is σ = 31248312729600. Its totient is φ = 11369181358080.

The previous prime is 20200122120989. The next prime is 20200122121027. The reversal of 20200122121011 is 11012122100202.

It is not a de Polignac number, because 20200122121011 - 2¹¹ = 20200122118963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20200122121511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 494486715 + ... + 494527563.

It is an arithmetic number, because the mean of its divisors is an integer number (488254886400).

Almost surely, 2^{20200122121011} is an apocalyptic number.

20200122121011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20200122121011 is a deficient number, since it is larger than the sum of its proper divisors (11048190608589).

20200122121011 is a wasteful number, since it uses less digits than its factorization.

20200122121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42324.

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

Adding to 20200122121011 its reverse (11012122100202), we get a palindrome (31212244221213).

The spelling of 20200122121011 in words is "twenty trillion, two hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, eleven".