12101021002121 has 4 divisors (see below), whose sum is σ = 12281633255952. Its totient is φ = 11920408748292.

The previous prime is 12101021002117. The next prime is 12101021002157. The reversal of 12101021002121 is 12120012010121.

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 12101021002121 - 2² = 12101021002117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101021002096 and 12101021002105.

It is not an unprimeable number, because it can be changed into a prime (12101021005121) 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, 90306126815 + ... + 90306126948.

It is an arithmetic number, because the mean of its divisors is an integer number (3070408313988).

Almost surely, 2^{12101021002121} is an apocalyptic number.

It is an amenable number.

12101021002121 is a deficient number, since it is larger than the sum of its proper divisors (180612253831).

12101021002121 is an equidigital number, since it uses as much as digits as its factorization.

12101021002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180612253830.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12101021002121 its reverse (12120012010121), we get a palindrome (24221033012242).

The spelling of 12101021002121 in words is "twelve trillion, one hundred one billion, twenty-one million, two thousand, one hundred twenty-one".