20121200121110 has 32 divisors (see below), whose sum is σ = 41590231833600. Its totient is φ = 6931705304160.

The previous prime is 20121200121101. The next prime is 20121200121179. The reversal of 20121200121110 is 1112100212102.

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, 4813682150 + ... + 4813686329.

It is an arithmetic number, because the mean of its divisors is an integer number (1299694744800).

Almost surely, 2^{20121200121110} is an apocalyptic number.

20121200121110 is an abundant number, since it is smaller than the sum of its proper divisors (21469031712490).

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

20121200121110 is a wasteful number, since it uses less digits than its factorization.

20121200121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9627368516.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121200121110 its reverse (1112100212102), we get a palindrome (21233300333212).

The spelling of 20121200121110 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-one thousand, one hundred ten".