1211102111102 has 16 divisors (see below), whose sum is σ = 1956602248272. Its totient is φ = 558911196480.

The previous prime is 1211102111047. The next prime is 1211102111179. The reversal of 1211102111102 is 2011112011121.

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, 2207183 + ... + 2700714.

It is an arithmetic number, because the mean of its divisors is an integer number (122287640517).

Almost surely, 2^{1211102111102} is an apocalyptic number.

1211102111102 is a deficient number, since it is larger than the sum of its proper divisors (745500137170).

1211102111102 is a wasteful number, since it uses less digits than its factorization.

1211102111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4917403.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1211102111102 its reverse (2011112011121), we get a palindrome (3222214122223).

The spelling of 1211102111102 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred eleven thousand, one hundred two".