2100120021122 has 4 divisors (see below), whose sum is σ = 3150180031686. Its totient is φ = 1050060010560.

The previous prime is 2100120021079. The next prime is 2100120021157. The reversal of 2100120021122 is 2211200210012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1330975235041 + 769144786081 = 1153679^2 + 877009^2 .

It is a super-2 number, since 2×2100120021122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100120021097 and 2100120021106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525030005279 + ... + 525030005282.

Almost surely, 2^{2100120021122} is an apocalyptic number.

2100120021122 is a deficient number, since it is larger than the sum of its proper divisors (1050060010564).

2100120021122 is a wasteful number, since it uses less digits than its factorization.

2100120021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050060010563.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2100120021122 its reverse (2211200210012), we get a palindrome (4311320231134).

The spelling of 2100120021122 in words is "two trillion, one hundred billion, one hundred twenty million, twenty-one thousand, one hundred twenty-two".