12120002210121 has 48 divisors (see below), whose sum is σ = 17729781955200. Its totient is φ = 7360410470400.

The previous prime is 12120002210119. The next prime is 12120002210191. The reversal of 12120002210121 is 12101220002121.

It is not a de Polignac number, because 12120002210121 - 2¹ = 12120002210119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120002210121.

It is not an unprimeable number, because it can be changed into a prime (12120002210111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16810396 + ... + 17516546.

It is an arithmetic number, because the mean of its divisors is an integer number (369370457400).

Almost surely, 2^{12120002210121} is an apocalyptic number.

It is an amenable number.

12120002210121 is a deficient number, since it is larger than the sum of its proper divisors (5609779745079).

12120002210121 is a wasteful number, since it uses less digits than its factorization.

12120002210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706626 (or 706613 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12120002210121 its reverse (12101220002121), we get a palindrome (24221222212242).

The spelling of 12120002210121 in words is "twelve trillion, one hundred twenty billion, two million, two hundred ten thousand, one hundred twenty-one".