12220020020021 has 32 divisors (see below), whose sum is σ = 13727121408000. Its totient is φ = 10781789040000.

The previous prime is 12220020019993. The next prime is 12220020020023. The reversal of 12220020020021 is 12002002002221.

It is not a de Polignac number, because 12220020020021 - 2¹⁸ = 12220019757877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220020019978 and 12220020020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220020020023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 821285660 + ... + 821300538.

It is an arithmetic number, because the mean of its divisors is an integer number (428972544000).

Almost surely, 2^{12220020020021} is an apocalyptic number.

12220020020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12220020020021 is a deficient number, since it is larger than the sum of its proper divisors (1507101387979).

12220020020021 is a wasteful number, since it uses less digits than its factorization.

12220020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24281.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12220020020021 its reverse (12002002002221), we get a palindrome (24222022022242).

The spelling of 12220020020021 in words is "twelve trillion, two hundred twenty billion, twenty million, twenty thousand, twenty-one".