121919220011 has 2 divisors, whose sum is σ = 121919220012. Its totient is φ = 121919220010.

The previous prime is 121919219987. The next prime is 121919220061. The reversal of 121919220011 is 110022919121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121919220011 is a prime.

It is not a weakly prime, because it can be changed into another prime (121919220061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60959610005 + 60959610006.

It is an arithmetic number, because the mean of its divisors is an integer number (60959610006).

Almost surely, 2^121919220011 is an apocalyptic number.

121919220011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121919220011 is an equidigital number, since it uses as much as digits as its factorization.

121919220011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 121919220011 in words is "one hundred twenty-one billion, nine hundred nineteen million, two hundred twenty thousand, eleven".