13220121002 has 16 divisors (see below), whose sum is σ = 21639182400. Its totient is φ = 6007407840.

The previous prime is 13220120957. The next prime is 13220121011. The reversal of 13220121002 is 20012102231.

It is a happy 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, 7502 + ... + 162777.

It is an arithmetic number, because the mean of its divisors is an integer number (1352448900).

Almost surely, 2^13220121002 is an apocalyptic number.

13220121002 is a deficient number, since it is larger than the sum of its proper divisors (8419061398).

13220121002 is a wasteful number, since it uses less digits than its factorization.

13220121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173821.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13220121002 its reverse (20012102231), we get a palindrome (33232223233).

The spelling of 13220121002 in words is "thirteen billion, two hundred twenty million, one hundred twenty-one thousand, two".