1222621104 has 20 divisors (see below), whose sum is σ = 3158437976. Its totient is φ = 407540352.

The previous prime is 1222621091. The next prime is 1222621123. The reversal of 1222621104 is 4011262221.

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, 12735589 + ... + 12735684.

Almost surely, 2^1222621104 is an apocalyptic number.

It is an amenable number.

1222621104 is an abundant number, since it is smaller than the sum of its proper divisors (1935816872).

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

1222621104 is a wasteful number, since it uses less digits than its factorization.

1222621104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25471284 (or 25471278 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1222621104 is about 34965.9992564205. Note that the first 3 decimals coincide. The cubic root of 1222621104 is about 1069.2944088929.

Adding to 1222621104 its reverse (4011262221), we get a palindrome (5233883325).

The spelling of 1222621104 in words is "one billion, two hundred twenty-two million, six hundred twenty-one thousand, one hundred four".