10012015122121 has 4 divisors (see below), whose sum is σ = 10225036720512. Its totient is φ = 9798993523732.

The previous prime is 10012015122101. The next prime is 10012015122143. The reversal of 10012015122121 is 12122151021001.

10012015122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10012015122121 - 2¹⁵ = 10012015089353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10012015122101) 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, 106510799125 + ... + 106510799218.

It is an arithmetic number, because the mean of its divisors is an integer number (2556259180128).

Almost surely, 2^{10012015122121} is an apocalyptic number.

It is an amenable number.

10012015122121 is a deficient number, since it is larger than the sum of its proper divisors (213021598391).

10012015122121 is an equidigital number, since it uses as much as digits as its factorization.

10012015122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213021598390.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 10012015122121 its reverse (12122151021001), we get a palindrome (22134166143122).

The spelling of 10012015122121 in words is "ten trillion, twelve billion, fifteen million, one hundred twenty-two thousand, one hundred twenty-one".