20012222122101 has 24 divisors (see below), whose sum is σ = 31536356956416. Its totient is φ = 12127870875840.

The previous prime is 20012222122097. The next prime is 20012222122103. The reversal of 20012222122101 is 10122122221002.

It is a happy number.

20012222122101 is a `hidden beast` number, since 20 + 0 + 1 + 222 + 212 + 210 + 1 = 666.

It is not a de Polignac number, because 20012222122101 - 2² = 20012222122097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012222122103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4624080 + ... + 7836233.

It is an arithmetic number, because the mean of its divisors is an integer number (1314014873184).

Almost surely, 2^{20012222122101} is an apocalyptic number.

It is an amenable number.

20012222122101 is a deficient number, since it is larger than the sum of its proper divisors (11524134834315).

20012222122101 is a wasteful number, since it uses less digits than its factorization.

20012222122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476553 (or 12476550 counting only the distinct ones).

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

Adding to 20012222122101 its reverse (10122122221002), we get a palindrome (30134344343103).

The spelling of 20012222122101 in words is "twenty trillion, twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred one".