1222194081 has 16 divisors (see below), whose sum is σ = 1641569984. Its totient is φ = 808830144.

The previous prime is 1222194053. The next prime is 1222194097. The reversal of 1222194081 is 1804912221.

It is a happy number.

It is not a de Polignac number, because 1222194081 - 2¹⁰ = 1222193057 is a prime.

It is a super-2 number, since 2×1222194081² = 2987516743262869122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222194041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232575 + ... + 237771.

It is an arithmetic number, because the mean of its divisors is an integer number (102598124).

Almost surely, 2^1222194081 is an apocalyptic number.

It is an amenable number.

1222194081 is a deficient number, since it is larger than the sum of its proper divisors (419375903).

1222194081 is a wasteful number, since it uses less digits than its factorization.

1222194081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1222194081 is about 34959.8924626493. The cubic root of 1222194081 is about 1069.1699041232.

The spelling of 1222194081 in words is "one billion, two hundred twenty-two million, one hundred ninety-four thousand, eighty-one".