20202221010111 has 32 divisors (see below), whose sum is σ = 30978228361728. Its totient is φ = 11471439957120.

The previous prime is 20202221010047. The next prime is 20202221010203. The reversal of 20202221010111 is 11101012220202.

It is not a de Polignac number, because 20202221010111 - 2⁶ = 20202221010047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202221010211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20736141 + ... + 21688521.

It is an arithmetic number, because the mean of its divisors is an integer number (968069636304).

Almost surely, 2^{20202221010111} is an apocalyptic number.

20202221010111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20202221010111 is a deficient number, since it is larger than the sum of its proper divisors (10776007351617).

20202221010111 is a wasteful number, since it uses less digits than its factorization.

20202221010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958751.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20202221010111 its reverse (11101012220202), we get a palindrome (31303233230313).

The spelling of 20202221010111 in words is "twenty trillion, two hundred two billion, two hundred twenty-one million, ten thousand, one hundred eleven".