1220212233 has 12 divisors (see below), whose sum is σ = 1810165188. Its totient is φ = 791488800.

The previous prime is 1220212229. The next prime is 1220212249. The reversal of 1220212233 is 3322120221.

1220212233 is a `hidden beast` number, since 1 + 220 + 212 + 233 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 768564729 + 451647504 = 27723^2 + 21252^2 .

It is not a de Polignac number, because 1220212233 - 2² = 1220212229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220212733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1831818 + ... + 1832483.

It is an arithmetic number, because the mean of its divisors is an integer number (150847099).

Almost surely, 2^1220212233 is an apocalyptic number.

It is an amenable number.

1220212233 is a deficient number, since it is larger than the sum of its proper divisors (589952955).

1220212233 is a wasteful number, since it uses less digits than its factorization.

1220212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664344 (or 3664341 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1220212233 is about 34931.5363675862. The cubic root of 1220212233 is about 1068.5916875591.

Adding to 1220212233 its reverse (3322120221), we get a palindrome (4542332454).

The spelling of 1220212233 in words is "one billion, two hundred twenty million, two hundred twelve thousand, two hundred thirty-three".