12220103031021 has 24 divisors (see below), whose sum is σ = 17764257962360. Its totient is φ = 8094585747456.

The previous prime is 12220103031007. The next prime is 12220103031067. The reversal of 12220103031021 is 12013030102221.

12220103031021 is a `hidden beast` number, since 12 + 220 + 103 + 0 + 310 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 128758968900 + 12091344062121 = 358830^2 + 3477261^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12220103031021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220103030985 and 12220103031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220103031091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50477361 + ... + 50718873.

Almost surely, 2^{12220103031021} is an apocalyptic number.

It is an amenable number.

12220103031021 is a deficient number, since it is larger than the sum of its proper divisors (5544154931339).

12220103031021 is a wasteful number, since it uses less digits than its factorization.

12220103031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277485 (or 277482 counting only the distinct ones).

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

Adding to 12220103031021 its reverse (12013030102221), we get a palindrome (24233133133242).

The spelling of 12220103031021 in words is "twelve trillion, two hundred twenty billion, one hundred three million, thirty-one thousand, twenty-one".