331220221331132 has 48 divisors (see below), whose sum is σ = 670918491048960. Its totient is φ = 140135295523392.

The previous prime is 331220221331123. The next prime is 331220221331143. The reversal of 331220221331132 is 231133122022133.

It is a junction number, because it is equal to n+sod(n) for n = 331220221331095 and 331220221331104.

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, 5662943 + ... + 26353545.

It is an arithmetic number, because the mean of its divisors is an integer number (13977468563520).

Almost surely, 2^{331220221331132} is an apocalyptic number.

It is an amenable number.

331220221331132 is an abundant number, since it is smaller than the sum of its proper divisors (339698269717828).

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

331220221331132 is a wasteful number, since it uses less digits than its factorization.

331220221331132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20697930 (or 20697928 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 331220221331132 its reverse (231133122022133), we get a palindrome (562353343353265).

The spelling of 331220221331132 in words is "three hundred thirty-one trillion, two hundred twenty billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred thirty-two".