1213221104 has 20 divisors (see below), whose sum is σ = 2359561776. Its totient is φ = 604301952.

The previous prime is 1213221077. The next prime is 1213221137. The reversal of 1213221104 is 4011223121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139949 + ... + 148364.

Almost surely, 2^1213221104 is an apocalyptic number.

It is an amenable number.

1213221104 is a deficient number, since it is larger than the sum of its proper divisors (1146340672).

1213221104 is a wasteful number, since it uses less digits than its factorization.

1213221104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288584 (or 288578 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1213221104 is about 34831.3236039057. The cubic root of 1213221104 is about 1066.5469679918.

Adding to 1213221104 its reverse (4011223121), we get a palindrome (5224444225).

The spelling of 1213221104 in words is "one billion, two hundred thirteen million, two hundred twenty-one thousand, one hundred four".