1202100200621 has 2 divisors, whose sum is σ = 1202100200622. Its totient is φ = 1202100200620.

The previous prime is 1202100200503. The next prime is 1202100200659. The reversal of 1202100200621 is 1260020012021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967103095396 + 234997105225 = 983414^2 + 484765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202100200621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202100200621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202100209621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601050100310 + 601050100311.

It is an arithmetic number, because the mean of its divisors is an integer number (601050100311).

Almost surely, 2^{1202100200621} is an apocalyptic number.

It is an amenable number.

1202100200621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202100200621 is an equidigital number, since it uses as much as digits as its factorization.

1202100200621 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 17.

Adding to 1202100200621 its reverse (1260020012021), we get a palindrome (2462120212642).

The spelling of 1202100200621 in words is "one trillion, two hundred two billion, one hundred million, two hundred thousand, six hundred twenty-one".