1222009985 has 32 divisors (see below), whose sum is σ = 1790499840. Its totient is φ = 781970112.

The previous prime is 1222009979. The next prime is 1222010057. The reversal of 1222009985 is 5899002221.

It is not a de Polignac number, because 1222009985 - 2⁴ = 1222009969 is a prime.

It is a super-3 number, since 3×1222009985³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30842 + ... + 58268.

It is an arithmetic number, because the mean of its divisors is an integer number (55953120).

Almost surely, 2^1222009985 is an apocalyptic number.

It is an amenable number.

1222009985 is a deficient number, since it is larger than the sum of its proper divisors (568489855).

1222009985 is a wasteful number, since it uses less digits than its factorization.

1222009985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27525.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1222009985 is about 34957.2594034487. The cubic root of 1222009985 is about 1069.1162193091.

The spelling of 1222009985 in words is "one billion, two hundred twenty-two million, nine thousand, nine hundred eighty-five".