19122010210021 has 4 divisors (see below), whose sum is σ = 19407413347552. Its totient is φ = 18836607072492.

The previous prime is 19122010209959. The next prime is 19122010210067. The reversal of 19122010210021 is 12001201022191.

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 a cyclic number.

It is not a de Polignac number, because 19122010210021 - 2¹⁵ = 19122010177253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19122010209974 and 19122010210001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19122010210621) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 142701568665 + ... + 142701568798.

It is an arithmetic number, because the mean of its divisors is an integer number (4851853336888).

Almost surely, 2^{19122010210021} is an apocalyptic number.

It is an amenable number.

19122010210021 is a deficient number, since it is larger than the sum of its proper divisors (285403137531).

19122010210021 is an equidigital number, since it uses as much as digits as its factorization.

19122010210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285403137530.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 19122010210021 in words is "nineteen trillion, one hundred twenty-two billion, ten million, two hundred ten thousand, twenty-one".