921401211 has 8 divisors (see below), whose sum is σ = 1229014864. Its totient is φ = 614027520.

The previous prime is 921401197. The next prime is 921401227. The reversal of 921401211 is 112104129.

It is a happy number.

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

It is not a de Polignac number, because 921401211 - 2⁵ = 921401179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921401281) 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, 50830 + ... + 66531.

It is an arithmetic number, because the mean of its divisors is an integer number (153626858).

Almost surely, 2^921401211 is an apocalyptic number.

921401211 is a deficient number, since it is larger than the sum of its proper divisors (307613653).

921401211 is a wasteful number, since it uses less digits than its factorization.

921401211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119981.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 921401211 is about 30354.5912672202. The cubic root of 921401211 is about 973.0823446508.

The spelling of 921401211 in words is "nine hundred twenty-one million, four hundred one thousand, two hundred eleven".