1211211100102 has 16 divisors (see below), whose sum is σ = 1820026627632. Its totient is φ = 604536023520.

The previous prime is 1211211100067. The next prime is 1211211100139. The reversal of 1211211100102 is 2010011121121.

It is a happy number.

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, 5191033 + ... + 5419339.

It is an arithmetic number, because the mean of its divisors is an integer number (113751664227).

Almost surely, 2^{1211211100102} is an apocalyptic number.

1211211100102 is a deficient number, since it is larger than the sum of its proper divisors (608815527530).

1211211100102 is a wasteful number, since it uses less digits than its factorization.

1211211100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232983.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211211100102 its reverse (2010011121121), we get a palindrome (3221222221223).

The spelling of 1211211100102 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred thousand, one hundred two".