20402114131111 has 16 divisors (see below), whose sum is σ = 20755602067968. Its totient is φ = 20051612064000.

The previous prime is 20402114131093. The next prime is 20402114131123. The reversal of 20402114131111 is 11113141120402.

It is a cyclic number.

It is not a de Polignac number, because 20402114131111 - 2²¹ = 20402112033959 is a prime.

It is a super-2 number, since 2×20402114131111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402114131171) 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, 461344981 + ... + 461389201.

It is an arithmetic number, because the mean of its divisors is an integer number (1297225129248).

Almost surely, 2^{20402114131111} is an apocalyptic number.

20402114131111 is a deficient number, since it is larger than the sum of its proper divisors (353487936857).

20402114131111 is a wasteful number, since it uses less digits than its factorization.

20402114131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77802.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 20402114131111 its reverse (11113141120402), we get a palindrome (31515255251513).

The spelling of 20402114131111 in words is "twenty trillion, four hundred two billion, one hundred fourteen million, one hundred thirty-one thousand, one hundred eleven".