202142581211 has 4 divisors (see below), whose sum is σ = 202584906792. Its totient is φ = 201700255632.

The previous prime is 202142581187. The next prime is 202142581327. The reversal of 202142581211 is 112185241202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202142581211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202142583211) 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, 221162105 + ... + 221163018.

It is an arithmetic number, because the mean of its divisors is an integer number (50646226698).

Almost surely, 2^202142581211 is an apocalyptic number.

202142581211 is a deficient number, since it is larger than the sum of its proper divisors (442325581).

202142581211 is an equidigital number, since it uses as much as digits as its factorization.

202142581211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442325580.

The product of its (nonzero) digits is 2560, while the sum is 29.

The spelling of 202142581211 in words is "two hundred two billion, one hundred forty-two million, five hundred eighty-one thousand, two hundred eleven".