20020122111 has 16 divisors (see below), whose sum is σ = 29174030208. Its totient is φ = 12110968800.

The previous prime is 20020122091. The next prime is 20020122119. The reversal of 20020122111 is 11122102002.

It is not a de Polignac number, because 20020122111 - 2⁵ = 20020122079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020122119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542841 + ... + 578546.

It is an arithmetic number, because the mean of its divisors is an integer number (1823376888).

Almost surely, 2^20020122111 is an apocalyptic number.

20020122111 is a deficient number, since it is larger than the sum of its proper divisors (9153908097).

20020122111 is a wasteful number, since it uses less digits than its factorization.

20020122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121942.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20020122111 its reverse (11122102002), we get a palindrome (31142224113).

The spelling of 20020122111 in words is "twenty billion, twenty million, one hundred twenty-two thousand, one hundred eleven".