20121212112110 has 16 divisors (see below), whose sum is σ = 36218469384000. Its totient is φ = 8048420937696.

The previous prime is 20121212112103. The next prime is 20121212112161. The reversal of 20121212112110 is 1121121212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6655430 + ... + 9194409.

It is an arithmetic number, because the mean of its divisors is an integer number (2263654336500).

Almost surely, 2^{20121212112110} is an apocalyptic number.

20121212112110 is a deficient number, since it is larger than the sum of its proper divisors (16097257271890).

20121212112110 is a wasteful number, since it uses less digits than its factorization.

20121212112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15976795.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20121212112110 its reverse (1121121212102), we get a palindrome (21242333324212).

The spelling of 20121212112110 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, one hundred ten".