1221133102 has 16 divisors (see below), whose sum is σ = 2165556960. Its totient is φ = 505296288.

The previous prime is 1221133093. The next prime is 1221133117. The reversal of 1221133102 is 2013311221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503453 + ... + 1504264.

It is an arithmetic number, because the mean of its divisors is an integer number (135347310).

Almost surely, 2^1221133102 is an apocalyptic number.

1221133102 is a deficient number, since it is larger than the sum of its proper divisors (944423858).

1221133102 is a wasteful number, since it uses less digits than its factorization.

1221133102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007755.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1221133102 is about 34944.7149365966. The cubic root of 1221133102 is about 1068.8604346652.

Adding to 1221133102 its reverse (2013311221), we get a palindrome (3234444323).

The spelling of 1221133102 in words is "one billion, two hundred twenty-one million, one hundred thirty-three thousand, one hundred two".