121022100079 has 2 divisors, whose sum is σ = 121022100080. Its totient is φ = 121022100078.

The previous prime is 121022100077. The next prime is 121022100109. The reversal of 121022100079 is 970001220121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121022100079 - 2¹ = 121022100077 is a prime.

Together with 121022100077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121022100077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511050039 + 60511050040.

It is an arithmetic number, because the mean of its divisors is an integer number (60511050040).

Almost surely, 2^121022100079 is an apocalyptic number.

121022100079 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022100079 is an equidigital number, since it uses as much as digits as its factorization.

121022100079 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 25.

The spelling of 121022100079 in words is "one hundred twenty-one billion, twenty-two million, one hundred thousand, seventy-nine".