202012110100621 has 2 divisors, whose sum is σ = 202012110100622. Its totient is φ = 202012110100620.

The previous prime is 202012110100583. The next prime is 202012110100631. The reversal of 202012110100621 is 126001011210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125979186162025 + 76032923938596 = 11224045^2 + 8719686^2 .

It is a cyclic number.

It is not a de Polignac number, because 202012110100621 - 2¹¹ = 202012110098573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202012110100631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006055050310 + 101006055050311.

It is an arithmetic number, because the mean of its divisors is an integer number (101006055050311).

Almost surely, 2^{202012110100621} is an apocalyptic number.

It is an amenable number.

202012110100621 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012110100621 is an equidigital number, since it uses as much as digits as its factorization.

202012110100621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 202012110100621 its reverse (126001011210202), we get a palindrome (328013121310823).

The spelling of 202012110100621 in words is "two hundred two trillion, twelve billion, one hundred ten million, one hundred thousand, six hundred twenty-one".