921010106501 has 4 divisors (see below), whose sum is σ = 933982079904. Its totient is φ = 908038133100.

The previous prime is 921010106491. The next prime is 921010106503. The reversal of 921010106501 is 105601010129.

921010106501 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 a de Polignac number, because none of the positive numbers 2^k-921010106501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921010106503) 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, 6485986595 + ... + 6485986736.

It is an arithmetic number, because the mean of its divisors is an integer number (233495519976).

Almost surely, 2^921010106501 is an apocalyptic number.

It is an amenable number.

921010106501 is a deficient number, since it is larger than the sum of its proper divisors (12971973403).

921010106501 is a wasteful number, since it uses less digits than its factorization.

921010106501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12971973402.

The product of its (nonzero) digits is 540, while the sum is 26.

The spelling of 921010106501 in words is "nine hundred twenty-one billion, ten million, one hundred six thousand, five hundred one".