921101143 has 2 divisors, whose sum is σ = 921101144. Its totient is φ = 921101142.

The previous prime is 921101131. The next prime is 921101149. The reversal of 921101143 is 341101129.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 921101143 - 2²¹ = 919003991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921101149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460550571 + 460550572.

It is an arithmetic number, because the mean of its divisors is an integer number (460550572).

Almost surely, 2^921101143 is an apocalyptic number.

921101143 is a deficient number, since it is larger than the sum of its proper divisors (1).

921101143 is an equidigital number, since it uses as much as digits as its factorization.

921101143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 921101143 is about 30349.6481528205. The cubic root of 921101143 is about 972.9767002720.

The spelling of 921101143 in words is "nine hundred twenty-one million, one hundred one thousand, one hundred forty-three".