1231421524252 has 12 divisors (see below), whose sum is σ = 2158856589960. Its totient is φ = 614605355696.

The previous prime is 1231421524231. The next prime is 1231421524259. The reversal of 1231421524252 is 2524251241321.

It is a super-2 number, since 2×1231421524252² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231421524259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276349102 + ... + 276353557.

It is an arithmetic number, because the mean of its divisors is an integer number (179904715830).

Almost surely, 2^{1231421524252} is an apocalyptic number.

It is an amenable number.

1231421524252 is a deficient number, since it is larger than the sum of its proper divisors (927435065708).

1231421524252 is a wasteful number, since it uses less digits than its factorization.

1231421524252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552703220 (or 552703218 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

Adding to 1231421524252 its reverse (2524251241321), we get a palindrome (3755672765573).

The spelling of 1231421524252 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-one million, five hundred twenty-four thousand, two hundred fifty-two".