331202122221220 has 48 divisors (see below), whose sum is σ = 707170575671280. Its totient is φ = 130279939006464.

The previous prime is 331202122221209. The next prime is 331202122221241. The reversal of 331202122221220 is 22122221202133.

It can be written as a sum of positive squares in 8 ways, for example, as 40758928969984 + 290443193251236 = 6384272^2 + 17042394^2 .

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, 543398425 + ... + 544007584.

It is an arithmetic number, because the mean of its divisors is an integer number (14732720326485).

Almost surely, 2^{331202122221220} is an apocalyptic number.

It is an amenable number.

331202122221220 is an abundant number, since it is smaller than the sum of its proper divisors (375968453450060).

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

331202122221220 is a wasteful number, since it uses less digits than its factorization.

331202122221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087406272 (or 1087406270 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 331202122221220 its reverse (22122221202133), we get a palindrome (353324343423353).

The spelling of 331202122221220 in words is "three hundred thirty-one trillion, two hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty".