121022021212091 has 2 divisors, whose sum is σ = 121022021212092. Its totient is φ = 121022021212090.

The previous prime is 121022021212073. The next prime is 121022021212111. The reversal of 121022021212091 is 190212120220121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121022021212091 - 2¹⁰ = 121022021211067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121022021212091.

It is not a weakly prime, because it can be changed into another prime (121022021212021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511010606045 + 60511010606046.

It is an arithmetic number, because the mean of its divisors is an integer number (60511010606046).

Almost surely, 2^{121022021212091} is an apocalyptic number.

121022021212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022021212091 is an equidigital number, since it uses as much as digits as its factorization.

121022021212091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 121022021212091 in words is "one hundred twenty-one trillion, twenty-two billion, twenty-one million, two hundred twelve thousand, ninety-one".