21022112195 has 16 divisors (see below), whose sum is σ = 30526227648. Its totient is φ = 13567211520.

The previous prime is 21022112179. The next prime is 21022112197. The reversal of 21022112195 is 59121122012.

It is not a de Polignac number, because 21022112195 - 2⁴ = 21022112179 is a prime.

It is a super-2 number, since 2×21022112195² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022112197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17665046 + ... + 17666235.

It is an arithmetic number, because the mean of its divisors is an integer number (1907889228).

Almost surely, 2^21022112195 is an apocalyptic number.

21022112195 is a deficient number, since it is larger than the sum of its proper divisors (9504115453).

21022112195 is a wasteful number, since it uses less digits than its factorization.

21022112195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35331310.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 21022112195 in words is "twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred ninety-five".