202100022101 has 2 divisors, whose sum is σ = 202100022102. Its totient is φ = 202100022100.

The previous prime is 202100022097. The next prime is 202100022133. The reversal of 202100022101 is 101220001202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106896302500 + 95203719601 = 326950^2 + 308551^2 .

It is a cyclic number.

It is not a de Polignac number, because 202100022101 - 2² = 202100022097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202100022161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050011050 + 101050011051.

It is an arithmetic number, because the mean of its divisors is an integer number (101050011051).

Almost surely, 2^202100022101 is an apocalyptic number.

It is an amenable number.

202100022101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202100022101 is an equidigital number, since it uses as much as digits as its factorization.

202100022101 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 202100022101 its reverse (101220001202), we get a palindrome (303320023303).

The spelling of 202100022101 in words is "two hundred two billion, one hundred million, twenty-two thousand, one hundred one".