221132212297 has 4 divisors (see below), whose sum is σ = 221198009236. Its totient is φ = 221066415360.

The previous prime is 221132212277. The next prime is 221132212303. The reversal of 221132212297 is 792212231122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 114706851856 + 106425360441 = 338684^2 + 326229^2 .

It is a cyclic number.

It is not a de Polignac number, because 221132212297 - 2¹⁵ = 221132179529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221132212277) 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, 32893428 + ... + 32900149.

It is an arithmetic number, because the mean of its divisors is an integer number (55299502309).

Almost surely, 2^221132212297 is an apocalyptic number.

It is an amenable number.

221132212297 is a deficient number, since it is larger than the sum of its proper divisors (65796939).

221132212297 is an equidigital number, since it uses as much as digits as its factorization.

221132212297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65796938.

The product of its digits is 12096, while the sum is 34.

The spelling of 221132212297 in words is "two hundred twenty-one billion, one hundred thirty-two million, two hundred twelve thousand, two hundred ninety-seven".