12220420421031 has 16 divisors (see below), whose sum is σ = 16527062952960. Its totient is φ = 8030698884000.

The previous prime is 12220420420997. The next prime is 12220420421047. The reversal of 12220420421031 is 13012402402221.

It is not a de Polignac number, because 12220420421031 - 2¹⁰ = 12220420420007 is a prime.

It is a super-2 number, since 2×12220420421031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12220420420992 and 12220420421010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220420421431) 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, 41912595 + ... + 42203156.

It is an arithmetic number, because the mean of its divisors is an integer number (1032941434560).

Almost surely, 2^{12220420421031} is an apocalyptic number.

12220420421031 is a deficient number, since it is larger than the sum of its proper divisors (4306642531929).

12220420421031 is an equidigital number, since it uses as much as digits as its factorization.

12220420421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84116446.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12220420421031 its reverse (13012402402221), we get a palindrome (25232822823252).

The spelling of 12220420421031 in words is "twelve trillion, two hundred twenty billion, four hundred twenty million, four hundred twenty-one thousand, thirty-one".