12001020102121 has 32 divisors (see below), whose sum is σ = 12549568204800. Its totient is φ = 11466869198400.

The previous prime is 12001020102089. The next prime is 12001020102157. The reversal of 12001020102121 is 12120102010021.

It is a cyclic number.

It is not a de Polignac number, because 12001020102121 - 2⁵ = 12001020102089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001020102821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1916174436 + ... + 1916180698.

It is an arithmetic number, because the mean of its divisors is an integer number (392174006400).

Almost surely, 2^{12001020102121} is an apocalyptic number.

It is an amenable number.

12001020102121 is a deficient number, since it is larger than the sum of its proper divisors (548548102679).

12001020102121 is a wasteful number, since it uses less digits than its factorization.

12001020102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237.

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

Adding to 12001020102121 its reverse (12120102010021), we get a palindrome (24121122112142).

The spelling of 12001020102121 in words is "twelve trillion, one billion, twenty million, one hundred two thousand, one hundred twenty-one".