921012103020011 has 4 divisors (see below), whose sum is σ = 921014739675792. Its totient is φ = 921009466364232.

The previous prime is 921012103019951. The next prime is 921012103020029. The reversal of 921012103020011 is 110020301210129.

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

It is a cyclic number.

It is not a de Polignac number, because 921012103020011 - 2⁶ = 921012103019947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921012103020071) 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, 1317803855 + ... + 1318502568.

It is an arithmetic number, because the mean of its divisors is an integer number (230253684918948).

Almost surely, 2^{921012103020011} is an apocalyptic number.

921012103020011 is a deficient number, since it is larger than the sum of its proper divisors (2636655781).

921012103020011 is a wasteful number, since it uses less digits than its factorization.

921012103020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636655780.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 921012103020011 in words is "nine hundred twenty-one trillion, twelve billion, one hundred three million, twenty thousand, eleven".