2101200212122 has 16 divisors (see below), whose sum is σ = 3441599139744. Its totient is φ = 954182250000.

The previous prime is 2101200212119. The next prime is 2101200212123. The reversal of 2101200212122 is 2212120021012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2101200212096 and 2101200212105.

It is not an unprimeable number, because it can be changed into a prime (2101200212123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45414129 + ... + 45460372.

It is an arithmetic number, because the mean of its divisors is an integer number (215099946234).

Almost surely, 2^{2101200212122} is an apocalyptic number.

2101200212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2101200212122 is a deficient number, since it is larger than the sum of its proper divisors (1340398927622).

2101200212122 is a wasteful number, since it uses less digits than its factorization.

2101200212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90875565.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2101200212122 its reverse (2212120021012), we get a palindrome (4313320233134).

The spelling of 2101200212122 in words is "two trillion, one hundred one billion, two hundred million, two hundred twelve thousand, one hundred twenty-two".