231021121132 has 6 divisors (see below), whose sum is σ = 404286961988. Its totient is φ = 115510560564.

The previous prime is 231021121129. The next prime is 231021121183. The reversal of 231021121132 is 231121120132.

It is a super-2 number, since 2×231021121132² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28877640138 + ... + 28877640145.

Almost surely, 2^231021121132 is an apocalyptic number.

It is an amenable number.

231021121132 is a deficient number, since it is larger than the sum of its proper divisors (173265840856).

231021121132 is a wasteful number, since it uses less digits than its factorization.

231021121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57755280287 (or 57755280285 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231021121132 its reverse (231121120132), we get a palindrome (462142241264).

The spelling of 231021121132 in words is "two hundred thirty-one billion, twenty-one million, one hundred twenty-one thousand, one hundred thirty-two".