331221101221032 has 128 divisors (see below), whose sum is σ = 918800060544000. Its totient is φ = 98651755005440.

The previous prime is 331221101221027. The next prime is 331221101221057. The reversal of 331221101221032 is 230122101122133.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 331221101220993 and 331221101221011.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88237444 + ... + 91914572.

It is an arithmetic number, because the mean of its divisors is an integer number (7178125473000).

Almost surely, 2^{331221101221032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331221101221032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459400030272000).

331221101221032 is an abundant number, since it is smaller than the sum of its proper divisors (587578959322968).

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

331221101221032 is a wasteful number, since it uses less digits than its factorization.

331221101221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682991 (or 3682987 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 331221101221032 its reverse (230122101122133), we get a palindrome (561343202343165).

The spelling of 331221101221032 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, one hundred one million, two hundred twenty-one thousand, thirty-two".