20102021120111 has 16 divisors (see below), whose sum is σ = 23042560419840. Its totient is φ = 17178690211200.

The previous prime is 20102021120101. The next prime is 20102021120131. The reversal of 20102021120111 is 11102112020102.

It is a de Polignac number, because none of the positive numbers 2^k-20102021120111 is a prime.

It is a super-2 number, since 2×20102021120111² (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 (20102021120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101694470 + ... + 101891948.

It is an arithmetic number, because the mean of its divisors is an integer number (1440160026240).

Almost surely, 2^{20102021120111} is an apocalyptic number.

20102021120111 is a deficient number, since it is larger than the sum of its proper divisors (2940539299729).

20102021120111 is a wasteful number, since it uses less digits than its factorization.

20102021120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240974.

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

Adding to 20102021120111 its reverse (11102112020102), we get a palindrome (31204133140213).

It can be divided in two parts, 2010202 and 1120111, that added together give a palindrome (3130313).

The spelling of 20102021120111 in words is "twenty trillion, one hundred two billion, twenty-one million, one hundred twenty thousand, one hundred eleven".