1222656210 has 48 divisors (see below), whose sum is σ = 3223696320. Its totient is φ = 321447840.

The previous prime is 1222656209. The next prime is 1222656263. The reversal of 1222656210 is 126562221.

1222656210 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 656 + 2 + 1 + 0 = 666.

It is a super-4 number, since 4×1222656210⁴ (a number of 37 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89280 + ... + 102059.

It is an arithmetic number, because the mean of its divisors is an integer number (67160340).

Almost surely, 2^1222656210 is an apocalyptic number.

1222656210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222656210 is an abundant number, since it is smaller than the sum of its proper divisors (2001040110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222656210 is a wasteful number, since it uses less digits than its factorization.

1222656210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191423 (or 191420 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1222656210 is about 34966.5012547724. The cubic root of 1222656210 is about 1069.3046432684.

The spelling of 1222656210 in words is "one billion, two hundred twenty-two million, six hundred fifty-six thousand, two hundred ten".