121120220111110 has 128 divisors (see below), whose sum is σ = 250660321486848. Its totient is φ = 41707269120000.

The previous prime is 121120220111101. The next prime is 121120220111113. The reversal of 121120220111110 is 11111022021121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120220111113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3268465702 + ... + 3268502758.

It is an arithmetic number, because the mean of its divisors is an integer number (1958283761616).

Almost surely, 2^{121120220111110} is an apocalyptic number.

121120220111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121120220111110 is an abundant number, since it is smaller than the sum of its proper divisors (129540101375738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121120220111110 is a wasteful number, since it uses less digits than its factorization.

121120220111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49990.

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

Adding to 121120220111110 its reverse (11111022021121), we get a palindrome (132231242132231).

It can be divided in two parts, 1211202 and 20111110, that added together give a palindrome (21322312).

The spelling of 121120220111110 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred twenty million, one hundred eleven thousand, one hundred ten".