2101122111201 has 48 divisors (see below), whose sum is σ = 2907773395200. Its totient is φ = 1349359672320.

The previous prime is 2101122111199. The next prime is 2101122111217. The reversal of 2101122111201 is 1021112211012.

It is a happy number.

It is not a de Polignac number, because 2101122111201 - 2¹ = 2101122111199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2101122118201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372074760 + ... + 372080406.

It is an arithmetic number, because the mean of its divisors is an integer number (60578612400).

Almost surely, 2^{2101122111201} is an apocalyptic number.

It is an amenable number.

2101122111201 is a deficient number, since it is larger than the sum of its proper divisors (806651283999).

2101122111201 is an equidigital number, since it uses as much as digits as its factorization.

2101122111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650 (or 6609 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2101122111201 its reverse (1021112211012), we get a palindrome (3122234322213).

The spelling of 2101122111201 in words is "two trillion, one hundred one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred one".