1222212279 has 8 divisors (see below), whose sum is σ = 1685810160. Its totient is φ = 786711296.

The previous prime is 1222212241. The next prime is 1222212281. The reversal of 1222212279 is 9722122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222212279 - 2⁷ = 1222212151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222216279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7024122 + ... + 7024295.

It is an arithmetic number, because the mean of its divisors is an integer number (210726270).

Almost surely, 2^1222212279 is an apocalyptic number.

1222212279 is a deficient number, since it is larger than the sum of its proper divisors (463597881).

1222212279 is a wasteful number, since it uses less digits than its factorization.

1222212279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14048449.

The product of its digits is 4032, while the sum is 30.

The square root of 1222212279 is about 34960.1527313597. The cubic root of 1222212279 is about 1069.1752106065.

The spelling of 1222212279 in words is "one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred seventy-nine".