1222765213 has 8 divisors (see below), whose sum is σ = 1238727168. Its totient is φ = 1206832704.

The previous prime is 1222765189. The next prime is 1222765217. The reversal of 1222765213 is 3125672221.

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 1222765213 - 2²¹ = 1220668061 is a prime.

It is a super-2 number, since 2×1222765213² = 2990309532245870738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222765217) 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, 83445 + ... + 96997.

It is an arithmetic number, because the mean of its divisors is an integer number (154840896).

Almost surely, 2^1222765213 is an apocalyptic number.

It is an amenable number.

1222765213 is a deficient number, since it is larger than the sum of its proper divisors (15961955).

1222765213 is a wasteful number, since it uses less digits than its factorization.

1222765213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14723.

The product of its digits is 10080, while the sum is 31.

The square root of 1222765213 is about 34968.0598975694. The cubic root of 1222765213 is about 1069.3364194263.

The spelling of 1222765213 in words is "one billion, two hundred twenty-two million, seven hundred sixty-five thousand, two hundred thirteen".