1902102022231 has 12 divisors (see below), whose sum is σ = 2061737910552. Its totient is φ = 1753288907184.

The previous prime is 1902102022201. The next prime is 1902102022237. The reversal of 1902102022231 is 1322202012091.

It is not a de Polignac number, because 1902102022231 - 2⁹ = 1902102021719 is a prime.

It is a super-2 number, since 2×1902102022231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1902102022196 and 1902102022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902102022237) 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 11 ways as a sum of consecutive naturals, for example, 71189085 + ... + 71215798.

It is an arithmetic number, because the mean of its divisors is an integer number (171811492546).

Almost surely, 2^{1902102022231} is an apocalyptic number.

1902102022231 is a deficient number, since it is larger than the sum of its proper divisors (159635888321).

1902102022231 is a wasteful number, since it uses less digits than its factorization.

1902102022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142404958 (or 142404939 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 1902102022231 in words is "one trillion, nine hundred two billion, one hundred two million, twenty-two thousand, two hundred thirty-one".