1320031122021 has 12 divisors (see below), whose sum is σ = 1907614874880. Its totient is φ = 879603861480.

The previous prime is 1320031122013. The next prime is 1320031122029. The reversal of 1320031122021 is 1202211300231.

1320031122021 is a `hidden beast` number, since 132 + 0 + 0 + 311 + 220 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1320031122013) and next prime (1320031122029).

It is not a de Polignac number, because 1320031122021 - 2³ = 1320031122013 is a prime.

It is a super-2 number, since 2×1320031122021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320031121985 and 1320031122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320031122029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34720491 + ... + 34758488.

It is an arithmetic number, because the mean of its divisors is an integer number (158967906240).

Almost surely, 2^{1320031122021} is an apocalyptic number.

It is an amenable number.

1320031122021 is a deficient number, since it is larger than the sum of its proper divisors (587583752859).

1320031122021 is a wasteful number, since it uses less digits than its factorization.

1320031122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69481096 (or 69481093 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1320031122021 its reverse (1202211300231), we get a palindrome (2522242422252).

The spelling of 1320031122021 in words is "one trillion, three hundred twenty billion, thirty-one million, one hundred twenty-two thousand, twenty-one".