121323726229 has 2 divisors, whose sum is σ = 121323726230. Its totient is φ = 121323726228.

The previous prime is 121323726221. The next prime is 121323726233. The reversal of 121323726229 is 922627323121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120957884100 + 365842129 = 347790^2 + 19127^2 .

It is a cyclic number.

It is not a de Polignac number, because 121323726229 - 2³ = 121323726221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121323726191 and 121323726200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121323726221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60661863114 + 60661863115.

It is an arithmetic number, because the mean of its divisors is an integer number (60661863115).

Almost surely, 2^121323726229 is an apocalyptic number.

It is an amenable number.

121323726229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121323726229 is an equidigital number, since it uses as much as digits as its factorization.

121323726229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The spelling of 121323726229 in words is "one hundred twenty-one billion, three hundred twenty-three million, seven hundred twenty-six thousand, two hundred twenty-nine".