11331021013020 has 72 divisors (see below), whose sum is σ = 34375340248704. Its totient is φ = 3021203273088.

The previous prime is 11331021013003. The next prime is 11331021013087. The reversal of 11331021013020 is 2031012013311.

11331021013020 is a `hidden beast` number, since 1 + 13 + 310 + 210 + 130 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11331021012984 and 11331021013002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2834124 + ... + 5540243.

It is an arithmetic number, because the mean of its divisors is an integer number (477435281232).

Almost surely, 2^{11331021013020} is an apocalyptic number.

11331021013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331021013020 is an abundant number, since it is smaller than the sum of its proper divisors (23044319235684).

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

11331021013020 is a wasteful number, since it uses less digits than its factorization.

11331021013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8381899 (or 8381894 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11331021013020 its reverse (2031012013311), we get a palindrome (13362033026331).

The spelling of 11331021013020 in words is "eleven trillion, three hundred thirty-one billion, twenty-one million, thirteen thousand, twenty".