202132120251 has 4 divisors (see below), whose sum is σ = 269509493672. Its totient is φ = 134754746832.

The previous prime is 202132120231. The next prime is 202132120259. The reversal of 202132120251 is 152021231202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 202132120251 - 2¹⁷ = 202131989179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202132120259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33688686706 + ... + 33688686711.

It is an arithmetic number, because the mean of its divisors is an integer number (67377373418).

Almost surely, 2^202132120251 is an apocalyptic number.

202132120251 is a deficient number, since it is larger than the sum of its proper divisors (67377373421).

202132120251 is an equidigital number, since it uses as much as digits as its factorization.

202132120251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67377373420.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 202132120251 its reverse (152021231202), we get a palindrome (354153351453).

The spelling of 202132120251 in words is "two hundred two billion, one hundred thirty-two million, one hundred twenty thousand, two hundred fifty-one".