202112021101 has 2 divisors, whose sum is σ = 202112021102. Its totient is φ = 202112021100.

The previous prime is 202112021093. The next prime is 202112021107. The reversal of 202112021101 is 101120211202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195567372900 + 6544648201 = 442230^2 + 80899^2 .

It is a cyclic number.

It is not a de Polignac number, because 202112021101 - 2³ = 202112021093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202112021107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056010550 + 101056010551.

It is an arithmetic number, because the mean of its divisors is an integer number (101056010551).

Almost surely, 2^202112021101 is an apocalyptic number.

It is an amenable number.

202112021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112021101 is an equidigital number, since it uses as much as digits as its factorization.

202112021101 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 13.

Adding to 202112021101 its reverse (101120211202), we get a palindrome (303232232303).

The spelling of 202112021101 in words is "two hundred two billion, one hundred twelve million, twenty-one thousand, one hundred one".