1332121231220 has 96 divisors (see below), whose sum is σ = 3132200924160. Its totient is φ = 472568878080.

The previous prime is 1332121231171. The next prime is 1332121231237. The reversal of 1332121231220 is 221321212331.

It is a congruent number.

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, 525824 + ... + 1714856.

It is an arithmetic number, because the mean of its divisors is an integer number (32627092960).

Almost surely, 2^{1332121231220} is an apocalyptic number.

1332121231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1332121231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566100462080).

1332121231220 is an abundant number, since it is smaller than the sum of its proper divisors (1800079692940).

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

1332121231220 is a wasteful number, since it uses less digits than its factorization.

1332121231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189225 (or 1189223 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1332121231220 its reverse (221321212331), we get a palindrome (1553442443551).

The spelling of 1332121231220 in words is "one trillion, three hundred thirty-two billion, one hundred twenty-one million, two hundred thirty-one thousand, two hundred twenty".