202021100112061 has 2 divisors, whose sum is σ = 202021100112062. Its totient is φ = 202021100112060.

The previous prime is 202021100111959. The next prime is 202021100112149. The reversal of 202021100112061 is 160211001120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196888183939225 + 5132916172836 = 14031685^2 + 2265594^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021100112061 - 2¹¹ = 202021100110013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202021100119061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010550056030 + 101010550056031.

It is an arithmetic number, because the mean of its divisors is an integer number (101010550056031).

Almost surely, 2^{202021100112061} is an apocalyptic number.

It is an amenable number.

202021100112061 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021100112061 is an equidigital number, since it uses as much as digits as its factorization.

202021100112061 is an odious number, because the sum of its binary digits is odd.

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

Adding to 202021100112061 its reverse (160211001120202), we get a palindrome (362232101232263).

The spelling of 202021100112061 in words is "two hundred two trillion, twenty-one billion, one hundred million, one hundred twelve thousand, sixty-one".