100220000012021 has 2 divisors, whose sum is σ = 100220000012022. Its totient is φ = 100220000012020.

The previous prime is 100220000011907. The next prime is 100220000012039. The reversal of 100220000012021 is 120210000022001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83317919458225 + 16902080553796 = 9127865^2 + 4111214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100220000012021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100220000011993 and 100220000012011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100220000012081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110000006010 + 50110000006011.

It is an arithmetic number, because the mean of its divisors is an integer number (50110000006011).

Almost surely, 2^{100220000012021} is an apocalyptic number.

It is an amenable number.

100220000012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100220000012021 is an equidigital number, since it uses as much as digits as its factorization.

100220000012021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100220000012021 its reverse (120210000022001), we get a palindrome (220430000034022).

The spelling of 100220000012021 in words is "one hundred trillion, two hundred twenty billion, twelve thousand, twenty-one".