1331220301220 has 48 divisors (see below), whose sum is σ = 3022229904960. Its totient is φ = 490828305024.

The previous prime is 1331220301127. The next prime is 1331220301237. The reversal of 1331220301220 is 221030221331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1331220301192 and 1331220301201.

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, 47326634 + ... + 47354753.

It is an arithmetic number, because the mean of its divisors is an integer number (62963123020).

Almost surely, 2^{1331220301220} is an apocalyptic number.

1331220301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331220301220 is an abundant number, since it is smaller than the sum of its proper divisors (1691009603740).

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

1331220301220 is a wasteful number, since it uses less digits than its factorization.

1331220301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94681452 (or 94681450 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1331220301220 its reverse (221030221331), we get a palindrome (1552250522551).

The spelling of 1331220301220 in words is "one trillion, three hundred thirty-one billion, two hundred twenty million, three hundred one thousand, two hundred twenty".