2122100112021 has 4 divisors (see below), whose sum is σ = 2829466816032. Its totient is φ = 1414733408012.

The previous prime is 2122100111969. The next prime is 2122100112073. The reversal of 2122100112021 is 1202110012212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2122100111969) and next prime (2122100112073).

It is a cyclic number.

It is not a de Polignac number, because 2122100112021 - 2⁷ = 2122100111893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122100110021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353683352001 + ... + 353683352006.

It is an arithmetic number, because the mean of its divisors is an integer number (707366704008).

Almost surely, 2^{2122100112021} is an apocalyptic number.

It is an amenable number.

2122100112021 is a deficient number, since it is larger than the sum of its proper divisors (707366704011).

2122100112021 is an equidigital number, since it uses as much as digits as its factorization.

2122100112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707366704010.

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

Adding to 2122100112021 its reverse (1202110012212), we get a palindrome (3324210124233).

The spelling of 2122100112021 in words is "two trillion, one hundred twenty-two billion, one hundred million, one hundred twelve thousand, twenty-one".