2021220010031 has 2 divisors, whose sum is σ = 2021220010032. Its totient is φ = 2021220010030.

The previous prime is 2021220010009. The next prime is 2021220010049. The reversal of 2021220010031 is 1300100221202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021220010031 is a prime.

It is a super-2 number, since 2×2021220010031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021220009988 and 2021220010015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021220013031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010610005015 + 1010610005016.

It is an arithmetic number, because the mean of its divisors is an integer number (1010610005016).

Almost surely, 2^{2021220010031} is an apocalyptic number.

2021220010031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021220010031 is an equidigital number, since it uses as much as digits as its factorization.

2021220010031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2021220010031 its reverse (1300100221202), we get a palindrome (3321320231233).

The spelling of 2021220010031 in words is "two trillion, twenty-one billion, two hundred twenty million, ten thousand, thirty-one".