202112220101 has 4 divisors (see below), whose sum is σ = 220486058304. Its totient is φ = 183738381900.

The previous prime is 202112220053. The next prime is 202112220119. The reversal of 202112220101 is 101022211202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202112220101 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 (202112220131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9186919085 + ... + 9186919106.

It is an arithmetic number, because the mean of its divisors is an integer number (55121514576).

Almost surely, 2^202112220101 is an apocalyptic number.

It is an amenable number.

202112220101 is a deficient number, since it is larger than the sum of its proper divisors (18373838203).

202112220101 is a wasteful number, since it uses less digits than its factorization.

202112220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18373838202.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202112220101 its reverse (101022211202), we get a palindrome (303134431303).

The spelling of 202112220101 in words is "two hundred two billion, one hundred twelve million, two hundred twenty thousand, one hundred one".