12121001000010 has 96 divisors (see below), whose sum is σ = 36076817836800. Its totient is φ = 2765889195264.

The previous prime is 12121000999993. The next prime is 12121001000027. The reversal of 12121001000010 is 1000010012121.

It is a happy number.

12121001000010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12121000999993) and next prime (12121001000027).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12121000999956 and 12121001000001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15682467 + ... + 16437206.

It is an arithmetic number, because the mean of its divisors is an integer number (375800185800).

Almost surely, 2^{12121001000010} is an apocalyptic number.

12121001000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121001000010 is an abundant number, since it is smaller than the sum of its proper divisors (23955816836790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121001000010 is a wasteful number, since it uses less digits than its factorization.

12121001000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32120292 (or 32120289 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12121001000010 its reverse (1000010012121), we get a palindrome (13121011012131).

The spelling of 12121001000010 in words is "twelve trillion, one hundred twenty-one billion, one million, ten", and thus it is an aban number.