221222322399 has 16 divisors (see below), whose sum is σ = 323646013152. Its totient is φ = 133568193408.

The previous prime is 221222322383. The next prime is 221222322401. The reversal of 221222322399 is 993223222122.

It is not a de Polignac number, because 221222322399 - 2⁴ = 221222322383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222322199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53510832 + ... + 53514965.

It is an arithmetic number, because the mean of its divisors is an integer number (20227875822).

Almost surely, 2^221222322399 is an apocalyptic number.

221222322399 is a deficient number, since it is larger than the sum of its proper divisors (102423690753).

221222322399 is a wasteful number, since it uses less digits than its factorization.

221222322399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107025866.

The product of its digits is 93312, while the sum is 39.

The spelling of 221222322399 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred twenty-two thousand, three hundred ninety-nine".