20120211000121 has 16 divisors (see below), whose sum is σ = 20282500929600. Its totient is φ = 19958496465600.

The previous prime is 20120211000103. The next prime is 20120211000161. The reversal of 20120211000121 is 12100011202102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120211000121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120211000161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729481551 + ... + 729509131.

It is an arithmetic number, because the mean of its divisors is an integer number (1267656308100).

Almost surely, 2^{20120211000121} is an apocalyptic number.

It is an amenable number.

20120211000121 is a deficient number, since it is larger than the sum of its proper divisors (162289929479).

20120211000121 is a wasteful number, since it uses less digits than its factorization.

20120211000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37800.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20120211000121 its reverse (12100011202102), we get a palindrome (32220222202223).

The spelling of 20120211000121 in words is "twenty trillion, one hundred twenty billion, two hundred eleven million, one hundred twenty-one", and thus it is an aban number.