102022121019 has 32 divisors (see below), whose sum is σ = 167450250240. Its totient is φ = 53804437632.

The previous prime is 102022120943. The next prime is 102022121021. The reversal of 102022121019 is 910121220201.

It is not a de Polignac number, because 102022121019 - 2²⁸ = 101753685563 is a prime.

It is a super-2 number, since 2×102022121019² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 102022120986 and 102022121004.

It is not an unprimeable number, because it can be changed into a prime (102022121059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1694962 + ... + 1754120.

It is an arithmetic number, because the mean of its divisors is an integer number (5232820320).

Almost surely, 2^102022121019 is an apocalyptic number.

102022121019 is a deficient number, since it is larger than the sum of its proper divisors (65428129221).

102022121019 is a wasteful number, since it uses less digits than its factorization.

102022121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65499.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 102022121019 in words is "one hundred two billion, twenty-two million, one hundred twenty-one thousand, nineteen".