331101021020 has 48 divisors (see below), whose sum is σ = 866882677248. Its totient is φ = 103200317760.

The previous prime is 331101020989. The next prime is 331101021047. The reversal of 331101021020 is 20120101133.

It is a super-2 number, since 2×331101021020² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 331101020986 and 331101021004.

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, 107498792 + ... + 107501871.

It is an arithmetic number, because the mean of its divisors is an integer number (18060055776).

Almost surely, 2^331101021020 is an apocalyptic number.

It is an amenable number.

331101021020 is an abundant number, since it is smaller than the sum of its proper divisors (535781656228).

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

331101021020 is a wasteful number, since it uses less digits than its factorization.

331101021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215000690 (or 215000688 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 331101021020 its reverse (20120101133), we get a palindrome (351221122153).

The spelling of 331101021020 in words is "three hundred thirty-one billion, one hundred one million, twenty-one thousand, twenty".