20001210112122 has 32 divisors (see below), whose sum is σ = 41382060511680. Its totient is φ = 6437132728320.

The previous prime is 20001210112043. The next prime is 20001210112127. The reversal of 20001210112122 is 22121101210002.

It is a super-2 number, since 2×20001210112122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20001210112127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51121722 + ... + 51511482.

It is an arithmetic number, because the mean of its divisors is an integer number (1293189390990).

Almost surely, 2^{20001210112122} is an apocalyptic number.

20001210112122 is an abundant number, since it is smaller than the sum of its proper divisors (21380850399558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001210112122 is a wasteful number, since it uses less digits than its factorization.

20001210112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684718.

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

Adding to 20001210112122 its reverse (22121101210002), we get a palindrome (42122311322124).

The spelling of 20001210112122 in words is "twenty trillion, one billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-two".