1220131132 has 48 divisors (see below), whose sum is σ = 2463914880. Its totient is φ = 522849600.

The previous prime is 1220131127. The next prime is 1220131147. The reversal of 1220131132 is 2311310221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172938 + ... + 179854.

It is an arithmetic number, because the mean of its divisors is an integer number (51331560).

Almost surely, 2^1220131132 is an apocalyptic number.

It is an amenable number.

1220131132 is an abundant number, since it is smaller than the sum of its proper divisors (1243783748).

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

1220131132 is a wasteful number, since it uses less digits than its factorization.

1220131132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162 (or 7160 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1220131132 is about 34930.3754918266. The cubic root of 1220131132 is about 1068.5680125042.

Adding to 1220131132 its reverse (2311310221), we get a palindrome (3531441353).

Subtracting 1220131132 from its reverse (2311310221), we obtain a square (1091179089 = 33033²).

The spelling of 1220131132 in words is "one billion, two hundred twenty million, one hundred thirty-one thousand, one hundred thirty-two".