222212211309 has 24 divisors (see below), whose sum is σ = 350173792800. Its totient is φ = 134665907040.

The previous prime is 222212211301. The next prime is 222212211341. The reversal of 222212211309 is 903112212222.

222212211309 is a `hidden beast` number, since 2 + 222 + 122 + 11 + 309 = 666.

It is not a de Polignac number, because 222212211309 - 2³ = 222212211301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212211301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1844287 + ... + 1961075.

It is an arithmetic number, because the mean of its divisors is an integer number (14590574700).

Almost surely, 2^222212211309 is an apocalyptic number.

It is an amenable number.

222212211309 is a deficient number, since it is larger than the sum of its proper divisors (127961581491).

222212211309 is a wasteful number, since it uses less digits than its factorization.

222212211309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136025 (or 136022 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 222212211309 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, three hundred nine".