12010002121 has 64 divisors (see below), whose sum is σ = 14486363136. Its totient is φ = 9853747200.

The previous prime is 12010002119. The next prime is 12010002187. The reversal of 12010002121 is 12120001021.

It is a cyclic number.

It is not a de Polignac number, because 12010002121 - 2¹ = 12010002119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12010002098 and 12010002107.

It is not an unprimeable number, because it can be changed into a prime (12010008121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44317216 + ... + 44317486.

It is an arithmetic number, because the mean of its divisors is an integer number (226349424).

Almost surely, 2^12010002121 is an apocalyptic number.

It is an amenable number.

12010002121 is a deficient number, since it is larger than the sum of its proper divisors (2476361015).

12010002121 is a wasteful number, since it uses less digits than its factorization.

12010002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482.

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

Adding to 12010002121 its reverse (12120001021), we get a palindrome (24130003142).

The spelling of 12010002121 in words is "twelve billion, ten million, two thousand, one hundred twenty-one".