202142121253 has 2 divisors, whose sum is σ = 202142121254. Its totient is φ = 202142121252.

The previous prime is 202142121227. The next prime is 202142121257. The reversal of 202142121253 is 352121241202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149910675489 + 52231445764 = 387183^2 + 228542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202142121253 is a prime.

It is a super-2 number, since 2×202142121253² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202142121257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101071060626 + 101071060627.

It is an arithmetic number, because the mean of its divisors is an integer number (101071060627).

Almost surely, 2^202142121253 is an apocalyptic number.

It is an amenable number.

202142121253 is a deficient number, since it is larger than the sum of its proper divisors (1).

202142121253 is an equidigital number, since it uses as much as digits as its factorization.

202142121253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 202142121253 its reverse (352121241202), we get a palindrome (554263362455).

The spelling of 202142121253 in words is "two hundred two billion, one hundred forty-two million, one hundred twenty-one thousand, two hundred fifty-three".