2148281222931 has 12 divisors (see below), whose sum is σ = 3105156894840. Its totient is φ = 1431225627840.

The previous prime is 2148281222903. The next prime is 2148281222939. The reversal of 2148281222931 is 1392221828412.

2148281222931 is a `hidden beast` number, since 2 + 1 + 482 + 81 + 2 + 2 + 2 + 93 + 1 = 666.

It is not a de Polignac number, because 2148281222931 - 2⁷ = 2148281222803 is a prime.

It is a super-2 number, since 2×2148281222931² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2148281222939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80140365 + ... + 80167166.

It is an arithmetic number, because the mean of its divisors is an integer number (258763074570).

Almost surely, 2^{2148281222931} is an apocalyptic number.

2148281222931 is a deficient number, since it is larger than the sum of its proper divisors (956875671909).

2148281222931 is a wasteful number, since it uses less digits than its factorization.

2148281222931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160309026 (or 160309023 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 2148281222931 in words is "two trillion, one hundred forty-eight billion, two hundred eighty-one million, two hundred twenty-two thousand, nine hundred thirty-one".