21202102112019 has 16 divisors (see below), whose sum is σ = 28544562688512. Its totient is φ = 13997194219008.

The previous prime is 21202102111979. The next prime is 21202102112041. The reversal of 21202102112019 is 91021120120212.

It is not a de Polignac number, because 21202102112019 - 2²³ = 21202093723411 is a prime.

It is a super-2 number, since 2×21202102112019² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21202102112019.

It is not an unprimeable number, because it can be changed into a prime (21202102111019) 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, 13652467 + ... + 15125939.

It is an arithmetic number, because the mean of its divisors is an integer number (1784035168032).

Almost surely, 2^{21202102112019} is an apocalyptic number.

21202102112019 is a deficient number, since it is larger than the sum of its proper divisors (7342460576493).

21202102112019 is a wasteful number, since it uses less digits than its factorization.

21202102112019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520146.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 21202102112019 in words is "twenty-one trillion, two hundred two billion, one hundred two million, one hundred twelve thousand, nineteen".