1221301102 has 16 divisors (see below), whose sum is σ = 2097833472. Its totient is φ = 522371160.

The previous prime is 1221301061. The next prime is 1221301111. The reversal of 1221301102 is 2011031221.

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, 79674 + ... + 93757.

It is an arithmetic number, because the mean of its divisors is an integer number (131114592).

Almost surely, 2^1221301102 is an apocalyptic number.

1221301102 is a deficient number, since it is larger than the sum of its proper divisors (876532370).

1221301102 is a wasteful number, since it uses less digits than its factorization.

1221301102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173943.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1221301102 is about 34947.1186508988. The cubic root of 1221301102 is about 1068.9094493381.

Adding to 1221301102 its reverse (2011031221), we get a palindrome (3232332323).

The spelling of 1221301102 in words is "one billion, two hundred twenty-one million, three hundred one thousand, one hundred two".