213122297195 has 4 divisors (see below), whose sum is σ = 255746756640. Its totient is φ = 170497837752.

The previous prime is 213122297191. The next prime is 213122297231. The reversal of 213122297195 is 591792221312.

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

It is a cyclic number.

It is not a de Polignac number, because 213122297195 - 2² = 213122297191 is a prime.

It is a super-2 number, since 2×213122297195² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213122297191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21312229715 + ... + 21312229724.

It is an arithmetic number, because the mean of its divisors is an integer number (63936689160).

Almost surely, 2^213122297195 is an apocalyptic number.

213122297195 is a deficient number, since it is larger than the sum of its proper divisors (42624459445).

213122297195 is an equidigital number, since it uses as much as digits as its factorization.

213122297195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42624459444.

The product of its digits is 136080, while the sum is 44.

The spelling of 213122297195 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred ninety-seven thousand, one hundred ninety-five".