1210111120102 has 4 divisors (see below), whose sum is σ = 1815166680156. Its totient is φ = 605055560050.

The previous prime is 1210111120021. The next prime is 1210111120157. The reversal of 1210111120102 is 2010211110121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302527780024 + ... + 302527780027.

It is an arithmetic number, because the mean of its divisors is an integer number (453791670039).

Almost surely, 2^{1210111120102} is an apocalyptic number.

1210111120102 is a deficient number, since it is larger than the sum of its proper divisors (605055560054).

1210111120102 is an equidigital number, since it uses as much as digits as its factorization.

1210111120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605055560053.

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

Adding to 1210111120102 its reverse (2010211110121), we get a palindrome (3220322230223).

The spelling of 1210111120102 in words is "one trillion, two hundred ten billion, one hundred eleven million, one hundred twenty thousand, one hundred two".