1102021091 has 2 divisors, whose sum is σ = 1102021092. Its totient is φ = 1102021090.

The previous prime is 1102021049. The next prime is 1102021111. The reversal of 1102021091 is 1901202011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1102021091 - 2⁶ = 1102021027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1102021691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551010545 + 551010546.

It is an arithmetic number, because the mean of its divisors is an integer number (551010546).

Almost surely, 2^1102021091 is an apocalyptic number.

1102021091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102021091 is an equidigital number, since it uses as much as digits as its factorization.

1102021091 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 17.

The square root of 1102021091 is about 33196.7030140043. The cubic root of 1102021091 is about 1032.9119504793.

The spelling of 1102021091 in words is "one billion, one hundred two million, twenty-one thousand, ninety-one".