213220221099 has 32 divisors (see below), whose sum is σ = 308424340224. Its totient is φ = 130501217280.

The previous prime is 213220221089. The next prime is 213220221163. The reversal of 213220221099 is 990122022312.

It is a happy number.

It is not a de Polignac number, because 213220221099 - 2¹⁵ = 213220188331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213220221029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1604992 + ... + 1732754.

It is an arithmetic number, because the mean of its divisors is an integer number (9638260632).

Almost surely, 2^213220221099 is an apocalyptic number.

213220221099 is a deficient number, since it is larger than the sum of its proper divisors (95204119125).

213220221099 is a wasteful number, since it uses less digits than its factorization.

213220221099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128587.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 213220221099 in words is "two hundred thirteen billion, two hundred twenty million, two hundred twenty-one thousand, ninety-nine".