121020022111091 has 2 divisors, whose sum is σ = 121020022111092. Its totient is φ = 121020022111090.

The previous prime is 121020022111081. The next prime is 121020022111117. The reversal of 121020022111091 is 190111220020121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121020022111091 - 2¹⁰ = 121020022110067 is a prime.

It is not a weakly prime, because it can be changed into another prime (121020022111061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510011055545 + 60510011055546.

It is an arithmetic number, because the mean of its divisors is an integer number (60510011055546).

Almost surely, 2^{121020022111091} is an apocalyptic number.

121020022111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020022111091 is an equidigital number, since it uses as much as digits as its factorization.

121020022111091 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 23.

The spelling of 121020022111091 in words is "one hundred twenty-one trillion, twenty billion, twenty-two million, one hundred eleven thousand, ninety-one".