10012421322121 has 4 divisors (see below), whose sum is σ = 10176559376644. Its totient is φ = 9848283267600.

The previous prime is 10012421322089. The next prime is 10012421322133. The reversal of 10012421322121 is 12122312421001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5760907235721 + 4251514086400 = 2400189^2 + 2061920^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012421322121 - 2⁵ = 10012421322089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012421322092 and 10012421322101.

It is not an unprimeable number, because it can be changed into a prime (10012421322191) 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, 82069027170 + ... + 82069027291.

It is an arithmetic number, because the mean of its divisors is an integer number (2544139844161).

Almost surely, 2^{10012421322121} is an apocalyptic number.

It is an amenable number.

10012421322121 is a deficient number, since it is larger than the sum of its proper divisors (164138054523).

10012421322121 is an equidigital number, since it uses as much as digits as its factorization.

10012421322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164138054522.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 10012421322121 its reverse (12122312421001), we get a palindrome (22134733743122).

The spelling of 10012421322121 in words is "ten trillion, twelve billion, four hundred twenty-one million, three hundred twenty-two thousand, one hundred twenty-one".