202001021010121 has 2 divisors, whose sum is σ = 202001021010122. Its totient is φ = 202001021010120.

The previous prime is 202001021010073. The next prime is 202001021010133. The reversal of 202001021010121 is 121010120100202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182184233934096 + 19816787076025 = 13497564^2 + 4451605^2 .

It is a cyclic number.

It is not a de Polignac number, because 202001021010121 - 2¹⁹ = 202001020485833 is a prime.

It is not a weakly prime, because it can be changed into another prime (202001021010181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000510505060 + 101000510505061.

It is an arithmetic number, because the mean of its divisors is an integer number (101000510505061).

Almost surely, 2^{202001021010121} is an apocalyptic number.

It is an amenable number.

202001021010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001021010121 is an equidigital number, since it uses as much as digits as its factorization.

202001021010121 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 202001021010121 its reverse (121010120100202), we get a palindrome (323011141110323).

The spelling of 202001021010121 in words is "two hundred two trillion, one billion, twenty-one million, ten thousand, one hundred twenty-one".