10012121001121 has 4 divisors (see below), whose sum is σ = 10040974376112. Its totient is φ = 9983267626132.

The previous prime is 10012121001049. The next prime is 10012121001133. The reversal of 10012121001121 is 12110012121001.

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 10012121001121 - 2⁷ = 10012121000993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10012121001521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14426686975 + ... + 14426687668.

It is an arithmetic number, because the mean of its divisors is an integer number (2510243594028).

Almost surely, 2^{10012121001121} is an apocalyptic number.

It is an amenable number.

10012121001121 is a deficient number, since it is larger than the sum of its proper divisors (28853374991).

10012121001121 is an equidigital number, since it uses as much as digits as its factorization.

10012121001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28853374990.

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

Adding to 10012121001121 its reverse (12110012121001), we get a palindrome (22122133122122).

It can be divided in two parts, 10012121001 and 121, that multiplied together give a palindrome (1211466641121).

The spelling of 10012121001121 in words is "ten trillion, twelve billion, one hundred twenty-one million, one thousand, one hundred twenty-one".