202001230121 has 2 divisors, whose sum is σ = 202001230122. Its totient is φ = 202001230120.

The previous prime is 202001230097. The next prime is 202001230133. The reversal of 202001230121 is 121032100202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167772160000 + 34229070121 = 409600^2 + 185011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202001230121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202001230096 and 202001230105.

It is not a weakly prime, because it can be changed into another prime (202001230181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000615060 + 101000615061.

It is an arithmetic number, because the mean of its divisors is an integer number (101000615061).

Almost surely, 2^202001230121 is an apocalyptic number.

It is an amenable number.

202001230121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001230121 is an equidigital number, since it uses as much as digits as its factorization.

202001230121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 202001230121 its reverse (121032100202), we get a palindrome (323033330323).

The spelling of 202001230121 in words is "two hundred two billion, one million, two hundred thirty thousand, one hundred twenty-one".