20122011101021 has 32 divisors (see below), whose sum is σ = 21103847654400. Its totient is φ = 19162906583040.

The previous prime is 20122011100993. The next prime is 20122011101029. The reversal of 20122011101021 is 12010111022102.

It is a cyclic number.

It is not a de Polignac number, because 20122011101021 - 2¹⁰ = 20122011099997 is a prime.

It is a super-2 number, since 2×20122011101021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122011100987 and 20122011101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122011101029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1149229415 + ... + 1149246923.

It is an arithmetic number, because the mean of its divisors is an integer number (659495239200).

Almost surely, 2^{20122011101021} is an apocalyptic number.

It is an amenable number.

20122011101021 is a deficient number, since it is larger than the sum of its proper divisors (981836553379).

20122011101021 is a wasteful number, since it uses less digits than its factorization.

20122011101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19349.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20122011101021 its reverse (12010111022102), we get a palindrome (32132122123123).

The spelling of 20122011101021 in words is "twenty trillion, one hundred twenty-two billion, eleven million, one hundred one thousand, twenty-one".