2215131231124 has 72 divisors (see below), whose sum is σ = 4712307891200. Its totient is φ = 891832540032.

The previous prime is 2215131231101. The next prime is 2215131231127. The reversal of 2215131231124 is 4211321315122.

It is a super-2 number, since 2×2215131231124² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2215131231092 and 2215131231101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215131231127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399924 + ... + 2142475.

Almost surely, 2^{2215131231124} is an apocalyptic number.

It is an amenable number.

2215131231124 is an abundant number, since it is smaller than the sum of its proper divisors (2497176660076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215131231124 is a wasteful number, since it uses less digits than its factorization.

2215131231124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542505 (or 2542474 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

Adding to 2215131231124 its reverse (4211321315122), we get a palindrome (6426452546246).

The spelling of 2215131231124 in words is "two trillion, two hundred fifteen billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred twenty-four".