20110202221111 has 16 divisors (see below), whose sum is σ = 21043734773760. Its totient is φ = 19194482036160.

The previous prime is 20110202221033. The next prime is 20110202221117. The reversal of 20110202221111 is 11112220201102.

It is a cyclic number.

It is not a de Polignac number, because 20110202221111 - 2²³ = 20110193832503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110202221117) 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, 198511770 + ... + 198613048.

It is an arithmetic number, because the mean of its divisors is an integer number (1315233423360).

Almost surely, 2^{20110202221111} is an apocalyptic number.

20110202221111 is a deficient number, since it is larger than the sum of its proper divisors (933532552649).

20110202221111 is a wasteful number, since it uses less digits than its factorization.

20110202221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189126.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20110202221111 its reverse (11112220201102), we get a palindrome (31222422422213).

The spelling of 20110202221111 in words is "twenty trillion, one hundred ten billion, two hundred two million, two hundred twenty-one thousand, one hundred eleven".