20112220222101 has 32 divisors (see below), whose sum is σ = 34052672517120. Its totient is φ = 11492617565232.

The previous prime is 20112220222021. The next prime is 20112220222187. The reversal of 20112220222101 is 10122202221102.

It is a happy number.

20112220222101 is a `hidden beast` number, since 201 + 12 + 220 + 22 + 210 + 1 = 666.

It is not a de Polignac number, because 20112220222101 - 2¹³ = 20112220213909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112220222301) 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, 36872106 + ... + 37413588.

It is an arithmetic number, because the mean of its divisors is an integer number (1064146016160).

Almost surely, 2^{20112220222101} is an apocalyptic number.

20112220222101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20112220222101 is a deficient number, since it is larger than the sum of its proper divisors (13940452295019).

20112220222101 is a wasteful number, since it uses less digits than its factorization.

20112220222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738022 (or 738016 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20112220222101 its reverse (10122202221102), we get a palindrome (30234422443203).

The spelling of 20112220222101 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred one".