921220000112021 has 8 divisors (see below), whose sum is σ = 922911158784384. Its totient is φ = 919530131912080.

The previous prime is 921220000111969. The next prime is 921220000112033. The reversal of 921220000112021 is 120211000022129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 921220000112021 - 2⁴⁶ = 850851255934357 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 (921220000115021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321189065 + ... + 324044526.

It is an arithmetic number, because the mean of its divisors is an integer number (115363894848048).

Almost surely, 2^{921220000112021} is an apocalyptic number.

It is an amenable number.

921220000112021 is a deficient number, since it is larger than the sum of its proper divisors (1691158672363).

921220000112021 is a wasteful number, since it uses less digits than its factorization.

921220000112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645236211.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 921220000112021 in words is "nine hundred twenty-one trillion, two hundred twenty billion, one hundred twelve thousand, twenty-one".