202101700061 has 2 divisors, whose sum is σ = 202101700062. Its totient is φ = 202101700060.

The previous prime is 202101700013. The next prime is 202101700069. The reversal of 202101700061 is 160007101202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188100894436 + 14000805625 = 433706^2 + 118325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202101700061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202101700069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050850030 + 101050850031.

It is an arithmetic number, because the mean of its divisors is an integer number (101050850031).

Almost surely, 2^202101700061 is an apocalyptic number.

It is an amenable number.

202101700061 is a deficient number, since it is larger than the sum of its proper divisors (1).

202101700061 is an equidigital number, since it uses as much as digits as its factorization.

202101700061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 202101700061 its reverse (160007101202), we get a palindrome (362108801263).

It can be divided in two parts, 20210 and 1700061, that added together give a palindrome (1720271).

The spelling of 202101700061 in words is "two hundred two billion, one hundred one million, seven hundred thousand, sixty-one".