1102121121091 has 2 divisors, whose sum is σ = 1102121121092. Its totient is φ = 1102121121090.

The previous prime is 1102121121089. The next prime is 1102121121097. The reversal of 1102121121091 is 1901211212011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1102121121091 - 2¹ = 1102121121089 is a prime.

Together with 1102121121089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1102121121097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551060560545 + 551060560546.

It is an arithmetic number, because the mean of its divisors is an integer number (551060560546).

Almost surely, 2^{1102121121091} is an apocalyptic number.

1102121121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102121121091 is an equidigital number, since it uses as much as digits as its factorization.

1102121121091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1102121121091 in words is "one trillion, one hundred two billion, one hundred twenty-one million, one hundred twenty-one thousand, ninety-one".