10121201001 has 48 divisors (see below), whose sum is σ = 15416593920. Its totient is φ = 6390109440.

The previous prime is 10121200993. The next prime is 10121201003. The reversal of 10121201001 is 10010212101.

It is a happy number.

10121201001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10121201001 - 2³ = 10121200993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10121201003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11727496 + ... + 11728358.

It is an arithmetic number, because the mean of its divisors is an integer number (321179040).

Almost surely, 2^10121201001 is an apocalyptic number.

It is an amenable number.

10121201001 is a deficient number, since it is larger than the sum of its proper divisors (5295392919).

10121201001 is a wasteful number, since it uses less digits than its factorization.

10121201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1803 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10121201001 its reverse (10010212101), we get a palindrome (20131413102).

The spelling of 10121201001 in words is "ten billion, one hundred twenty-one million, two hundred one thousand, one".