1213111102204 has 12 divisors (see below), whose sum is σ = 2126385185904. Its totient is φ = 605572477664.

The previous prime is 1213111102187. The next prime is 1213111102207. The reversal of 1213111102204 is 4022011113121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213111102207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245765584 + ... + 245770519.

It is an arithmetic number, because the mean of its divisors is an integer number (177198765492).

Almost surely, 2^{1213111102204} is an apocalyptic number.

It is an amenable number.

1213111102204 is a deficient number, since it is larger than the sum of its proper divisors (913274083700).

1213111102204 is a wasteful number, since it uses less digits than its factorization.

1213111102204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491536724 (or 491536722 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1213111102204 its reverse (4022011113121), we get a palindrome (5235122215325).

The spelling of 1213111102204 in words is "one trillion, two hundred thirteen billion, one hundred eleven million, one hundred two thousand, two hundred four".