1213321102 has 16 divisors (see below), whose sum is σ = 2086761600. Its totient is φ = 518299128.

The previous prime is 1213321079. The next prime is 1213321147. The reversal of 1213321102 is 2011233121.

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, 136852 + ... + 145447.

It is an arithmetic number, because the mean of its divisors is an integer number (130422600).

Almost surely, 2^1213321102 is an apocalyptic number.

1213321102 is a deficient number, since it is larger than the sum of its proper divisors (873440498).

1213321102 is a wasteful number, since it uses less digits than its factorization.

1213321102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282615.

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

The square root of 1213321102 is about 34832.7590351382. The cubic root of 1213321102 is about 1066.5762700521.

Adding to 1213321102 its reverse (2011233121), we get a palindrome (3224554223).

The spelling of 1213321102 in words is "one billion, two hundred thirteen million, three hundred twenty-one thousand, one hundred two".