121211120120110 has 32 divisors (see below), whose sum is σ = 220284884257920. Its totient is φ = 48016970387232.

The previous prime is 121211120120107. The next prime is 121211120120183. The reversal of 121211120120110 is 11021021112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13341540 + ... + 20504119.

It is an arithmetic number, because the mean of its divisors is an integer number (6883902633060).

Almost surely, 2^{121211120120110} is an apocalyptic number.

121211120120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211120120110 is a deficient number, since it is larger than the sum of its proper divisors (99073764137810).

121211120120110 is a wasteful number, since it uses less digits than its factorization.

121211120120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33849120.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 121211120120110 its reverse (11021021112121), we get a palindrome (132232141232231).

The spelling of 121211120120110 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty million, one hundred twenty thousand, one hundred ten".