420012002012121 has 16 divisors (see below), whose sum is σ = 622615525076800. Its totient is φ = 279839016398304.

The previous prime is 420012002012089. The next prime is 420012002012137. The reversal of 420012002012121 is 121210200210024.

420012002012121 is a `hidden beast` number, since 420 + 0 + 1 + 2 + 0 + 0 + 201 + 21 + 21 = 666.

It is not a de Polignac number, because 420012002012121 - 2⁵ = 420012002012089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420012002012094 and 420012002012103.

It is not an unprimeable number, because it can be changed into a prime (420012002012521) 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, 4693980631 + ... + 4694070108.

It is an arithmetic number, because the mean of its divisors is an integer number (38913470317300).

Almost surely, 2^{420012002012121} is an apocalyptic number.

It is an amenable number.

420012002012121 is a deficient number, since it is larger than the sum of its proper divisors (202603523064679).

420012002012121 is a wasteful number, since it uses less digits than its factorization.

420012002012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9388052405 (or 9388052399 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 420012002012121 its reverse (121210200210024), we get a palindrome (541222202222145).

The spelling of 420012002012121 in words is "four hundred twenty trillion, twelve billion, two million, twelve thousand, one hundred twenty-one".