2100121110122 has 64 divisors (see below), whose sum is σ = 3744210075648. Its totient is φ = 864496800000.

The previous prime is 2100121110089. The next prime is 2100121110137. The reversal of 2100121110122 is 2210111210012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2100121110097 and 2100121110106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78692993 + ... + 78719675.

It is an arithmetic number, because the mean of its divisors is an integer number (58503282432).

Almost surely, 2^{2100121110122} is an apocalyptic number.

2100121110122 is a deficient number, since it is larger than the sum of its proper divisors (1644088965526).

2100121110122 is a wasteful number, since it uses less digits than its factorization.

2100121110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28075.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2100121110122 its reverse (2210111210012), we get a palindrome (4310232320134).

The spelling of 2100121110122 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-two".