20020120122011 has 4 divisors (see below), whose sum is σ = 20020231536624. Its totient is φ = 20020008707400.

The previous prime is 20020120122001. The next prime is 20020120122019. The reversal of 20020120122011 is 11022102102002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20020120122011 - 2¹⁴ = 20020120105627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020120122019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55437335 + ... + 55797296.

It is an arithmetic number, because the mean of its divisors is an integer number (5005057884156).

Almost surely, 2^{20020120122011} is an apocalyptic number.

20020120122011 is a deficient number, since it is larger than the sum of its proper divisors (111414613).

20020120122011 is a wasteful number, since it uses less digits than its factorization.

20020120122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111414612.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20020120122011 its reverse (11022102102002), we get a palindrome (31042222224013).

The spelling of 20020120122011 in words is "twenty trillion, twenty billion, one hundred twenty million, one hundred twenty-two thousand, eleven".