1221222010113 has 32 divisors (see below), whose sum is σ = 2138976710400. Its totient is φ = 673777657728.

The previous prime is 1221222010097. The next prime is 1221222010147. The reversal of 1221222010113 is 3110102221221.

It is not a de Polignac number, because 1221222010113 - 2⁴ = 1221222010097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221222010153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111399556 + ... + 111410517.

It is an arithmetic number, because the mean of its divisors is an integer number (66843022200).

Almost surely, 2^{1221222010113} is an apocalyptic number.

It is an amenable number.

1221222010113 is a deficient number, since it is larger than the sum of its proper divisors (917754700287).

1221222010113 is a wasteful number, since it uses less digits than its factorization.

1221222010113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222810118 (or 222810112 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1221222010113 its reverse (3110102221221), we get a palindrome (4331324231334).

The spelling of 1221222010113 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, ten thousand, one hundred thirteen".