12010011012121 has 4 divisors (see below), whose sum is σ = 12013223107600. Its totient is φ = 12006798916644.

The previous prime is 12010011012007. The next prime is 12010011012143. The reversal of 12010011012121 is 12121011001021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12010011012121 - 2⁷ = 12010011011993 is a prime.

It is a super-2 number, since 2×12010011012121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010011012161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606042131 + ... + 1606049608.

It is an arithmetic number, because the mean of its divisors is an integer number (3003305776900).

Almost surely, 2^{12010011012121} is an apocalyptic number.

It is an amenable number.

12010011012121 is a deficient number, since it is larger than the sum of its proper divisors (3212095479).

12010011012121 is an equidigital number, since it uses as much as digits as its factorization.

12010011012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212095478.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12010011012121 its reverse (12121011001021), we get a palindrome (24131022013142).

It can be divided in two parts, 1201001 and 1012121, that added together give a palindrome (2213122).

The spelling of 12010011012121 in words is "twelve trillion, ten billion, eleven million, twelve thousand, one hundred twenty-one".