12221021102 has 4 divisors (see below), whose sum is σ = 18331531656. Its totient is φ = 6110510550.

The previous prime is 12221021053. The next prime is 12221021147. The reversal of 12221021102 is 20112012221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055255274 + ... + 3055255277.

It is an arithmetic number, because the mean of its divisors is an integer number (4582882914).

Almost surely, 2^12221021102 is an apocalyptic number.

12221021102 is a deficient number, since it is larger than the sum of its proper divisors (6110510554).

12221021102 is an equidigital number, since it uses as much as digits as its factorization.

12221021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110510553.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12221021102 its reverse (20112012221), we get a palindrome (32333033323).

The spelling of 12221021102 in words is "twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred two".