201010022491 has 2 divisors, whose sum is σ = 201010022492. Its totient is φ = 201010022490.

The previous prime is 201010022431. The next prime is 201010022509. The reversal of 201010022491 is 194220010102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201010022491 - 2¹³ = 201010014299 is a prime.

It is not a weakly prime, because it can be changed into another prime (201010022431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505011245 + 100505011246.

It is an arithmetic number, because the mean of its divisors is an integer number (100505011246).

Almost surely, 2^201010022491 is an apocalyptic number.

201010022491 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010022491 is an equidigital number, since it uses as much as digits as its factorization.

201010022491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 201010022491 its reverse (194220010102), we get a palindrome (395230032593).

The spelling of 201010022491 in words is "two hundred one billion, ten million, twenty-two thousand, four hundred ninety-one".