121111200020010 has 16 divisors (see below), whose sum is σ = 290666880048096. Its totient is φ = 32296320005328.

The previous prime is 121111200020009. The next prime is 121111200020017. The reversal of 121111200020010 is 10020002111121.

It is not an unprimeable number, because it can be changed into a prime (121111200020017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018520000304 + ... + 2018520000363.

It is an arithmetic number, because the mean of its divisors is an integer number (18166680003006).

Almost surely, 2^{121111200020010} is an apocalyptic number.

121111200020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111200020010 is an abundant number, since it is smaller than the sum of its proper divisors (169555680028086).

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

121111200020010 is a wasteful number, since it uses less digits than its factorization.

121111200020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037040000677.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121111200020010 its reverse (10020002111121), we get a palindrome (131131202131131).

The spelling of 121111200020010 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred million, twenty thousand, ten".