12020000100121 has 16 divisors (see below), whose sum is σ = 12990994987264. Its totient is φ = 11055634717824.

The previous prime is 12020000100077. The next prime is 12020000100131. The reversal of 12020000100121 is 12100100002021.

It is a cyclic number.

It is not a de Polignac number, because 12020000100121 - 2⁷ = 12020000099993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020000100098 and 12020000100107.

It is not an unprimeable number, because it can be changed into a prime (12020000100131) 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, 87811885 + ... + 87948661.

It is an arithmetic number, because the mean of its divisors is an integer number (811937186704).

Almost surely, 2^{12020000100121} is an apocalyptic number.

It is an amenable number.

12020000100121 is a deficient number, since it is larger than the sum of its proper divisors (970994887143).

12020000100121 is a wasteful number, since it uses less digits than its factorization.

12020000100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160960.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12020000100121 its reverse (12100100002021), we get a palindrome (24120100102142).

The spelling of 12020000100121 in words is "twelve trillion, twenty billion, one hundred thousand, one hundred twenty-one".