10122121001 has 4 divisors (see below), whose sum is σ = 10182732672. Its totient is φ = 10061509332.

The previous prime is 10122120989. The next prime is 10122121057. The reversal of 10122121001 is 10012122101.

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 10122121001 - 2²⁶ = 10055012137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10122121081) 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, 30305585 + ... + 30305918.

It is an arithmetic number, because the mean of its divisors is an integer number (2545683168).

Almost surely, 2^10122121001 is an apocalyptic number.

It is an amenable number.

10122121001 is a deficient number, since it is larger than the sum of its proper divisors (60611671).

10122121001 is an equidigital number, since it uses as much as digits as its factorization.

10122121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60611670.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10122121001 its reverse (10012122101), we get a palindrome (20134243102).

The spelling of 10122121001 in words is "ten billion, one hundred twenty-two million, one hundred twenty-one thousand, one".