901050221171 has 2 divisors, whose sum is σ = 901050221172. Its totient is φ = 901050221170.

The previous prime is 901050221129. The next prime is 901050221189. The reversal of 901050221171 is 171122050109.

It is a happy number.

901050221171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-901050221171 is a prime.

It is a super-2 number, since 2×901050221171² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (901050221971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450525110585 + 450525110586.

It is an arithmetic number, because the mean of its divisors is an integer number (450525110586).

Almost surely, 2^901050221171 is an apocalyptic number.

901050221171 is a deficient number, since it is larger than the sum of its proper divisors (1).

901050221171 is an equidigital number, since it uses as much as digits as its factorization.

901050221171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 29.

The spelling of 901050221171 in words is "nine hundred one billion, fifty million, two hundred twenty-one thousand, one hundred seventy-one".