2210021291 has 2 divisors, whose sum is σ = 2210021292. Its totient is φ = 2210021290.

The previous prime is 2210021273. The next prime is 2210021311. The reversal of 2210021291 is 1921200122.

It is a happy number.

It is an a-pointer prime, because the next prime (2210021311) can be obtained adding 2210021291 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2210021291 - 2²⁶ = 2142912427 is a prime.

It is not a weakly prime, because it can be changed into another prime (2210021201) 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, 1105010645 + 1105010646.

It is an arithmetic number, because the mean of its divisors is an integer number (1105010646).

Almost surely, 2^2210021291 is an apocalyptic number.

2210021291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210021291 is an equidigital number, since it uses as much as digits as its factorization.

2210021291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2210021291 is about 47010.8635423771. The cubic root of 2210021291 is about 1302.5632446329.

It can be divided in two parts, 221002 and 1291, that multiplied together give a palindrome (285313582).

The spelling of 2210021291 in words is "two billion, two hundred ten million, twenty-one thousand, two hundred ninety-one".