10012121222121 has 24 divisors (see below), whose sum is σ = 15000997886784. Its totient is φ = 6673226672880.

The previous prime is 10012121222099. The next prime is 10012121222219. The reversal of 10012121222121 is 12122212121001.

It is not a de Polignac number, because 10012121222121 - 2¹⁵ = 10012121189353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10012121222094 and 10012121222103.

It is not an unprimeable number, because it can be changed into a prime (10012121222921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3624646 + ... + 5758671.

It is an arithmetic number, because the mean of its divisors is an integer number (625041578616).

Almost surely, 2^{10012121222121} is an apocalyptic number.

It is an amenable number.

10012121222121 is a deficient number, since it is larger than the sum of its proper divisors (4988876664663).

10012121222121 is an frugal number, since it uses more digits than its factorization.

10012121222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9387723 (or 9387711 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10012121222121 its reverse (12122212121001), we get a palindrome (22134333343122).

The spelling of 10012121222121 in words is "ten trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".