121221101179 has 2 divisors, whose sum is σ = 121221101180. Its totient is φ = 121221101178.

The previous prime is 121221101173. The next prime is 121221101207. The reversal of 121221101179 is 971101122121.

It is an a-pointer prime, because the next prime (121221101207) can be obtained adding 121221101179 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121221101179 - 2³⁵ = 86861362811 is a prime.

It is not a weakly prime, because it can be changed into another prime (121221101173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610550589 + 60610550590.

It is an arithmetic number, because the mean of its divisors is an integer number (60610550590).

Almost surely, 2^121221101179 is an apocalyptic number.

121221101179 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221101179 is an equidigital number, since it uses as much as digits as its factorization.

121221101179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 121221101179 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred seventy-nine".