1211212112102 has 16 divisors (see below), whose sum is σ = 1828941169200. Its totient is φ = 601569027072.

The previous prime is 1211212112069. The next prime is 1211212112111. The reversal of 1211212112102 is 2012112121121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381227 + ... + 1602422.

It is an arithmetic number, because the mean of its divisors is an integer number (114308823075).

Almost surely, 2^{1211212112102} is an apocalyptic number.

1211212112102 is a deficient number, since it is larger than the sum of its proper divisors (617729057098).

1211212112102 is a wasteful number, since it uses less digits than its factorization.

1211212112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985687.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1211212112102 its reverse (2012112121121), we get a palindrome (3223324233223).

The spelling of 1211212112102 in words is "one trillion, two hundred eleven billion, two hundred twelve million, one hundred twelve thousand, one hundred two".