1022221002091 has 2 divisors, whose sum is σ = 1022221002092. Its totient is φ = 1022221002090.

The previous prime is 1022221002067. The next prime is 1022221002137. The reversal of 1022221002091 is 1902001222201.

1022221002091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022221002091 - 2¹⁷ = 1022220871019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022221003091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511110501045 + 511110501046.

It is an arithmetic number, because the mean of its divisors is an integer number (511110501046).

Almost surely, 2^{1022221002091} is an apocalyptic number.

1022221002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022221002091 is an equidigital number, since it uses as much as digits as its factorization.

1022221002091 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 1022221002091 its reverse (1902001222201), we get a palindrome (2924222224292).

The spelling of 1022221002091 in words is "one trillion, twenty-two billion, two hundred twenty-one million, two thousand, ninety-one".