920211001 has 2 divisors, whose sum is σ = 920211002. Its totient is φ = 920211000.

The previous prime is 920210999. The next prime is 920211077. The reversal of 920211001 is 100112029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858431401 + 61779600 = 29299^2 + 7860^2 .

It is an emirp because it is prime and its reverse (100112029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920211001 - 2¹ = 920210999 is a prime.

It is a super-2 number, since 2×920211001² = 1693576572722844002, which contains 22 as substring.

Together with 920210999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (920211091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460105500 + 460105501.

It is an arithmetic number, because the mean of its divisors is an integer number (460105501).

Almost surely, 2^920211001 is an apocalyptic number.

It is an amenable number.

920211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

920211001 is an equidigital number, since it uses as much as digits as its factorization.

920211001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 920211001 is about 30334.9798252776. The cubic root of 920211001 is about 972.6631745986.

The spelling of 920211001 in words is "nine hundred twenty million, two hundred eleven thousand, one".