1222678407 has 8 divisors (see below), whose sum is σ = 1645474176. Its totient is φ = 807500792.

The previous prime is 1222678393. The next prime is 1222678411. The reversal of 1222678407 is 7048762221.

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 1222678407 - 2¹² = 1222674311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222678447) 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, 1904163 + ... + 1904804.

It is an arithmetic number, because the mean of its divisors is an integer number (205684272).

Almost surely, 2^1222678407 is an apocalyptic number.

1222678407 is a deficient number, since it is larger than the sum of its proper divisors (422795769).

1222678407 is a wasteful number, since it uses less digits than its factorization.

1222678407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809077.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 1222678407 is about 34966.8186571212. The cubic root of 1222678407 is about 1069.3111142102.

The spelling of 1222678407 in words is "one billion, two hundred twenty-two million, six hundred seventy-eight thousand, four hundred seven".