1331051100020 has 48 divisors (see below), whose sum is σ = 2837104256448. Its totient is φ = 524499406080.

The previous prime is 1331051100017. The next prime is 1331051100023. The reversal of 1331051100020 is 200011501331.

It is an interprime number because it is at equal distance from previous prime (1331051100017) and next prime (1331051100023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331051100023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1495202 + ... + 2213081.

It is an arithmetic number, because the mean of its divisors is an integer number (59106338676).

Almost surely, 2^{1331051100020} is an apocalyptic number.

1331051100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331051100020 is an abundant number, since it is smaller than the sum of its proper divisors (1506053156428).

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

1331051100020 is a wasteful number, since it uses less digits than its factorization.

1331051100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708560 (or 3708558 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

Adding to 1331051100020 its reverse (200011501331), we get a palindrome (1531062601351).

The spelling of 1331051100020 in words is "one trillion, three hundred thirty-one billion, fifty-one million, one hundred thousand, twenty".