121502405411 has 2 divisors, whose sum is σ = 121502405412. Its totient is φ = 121502405410.

The previous prime is 121502405359. The next prime is 121502405429. The reversal of 121502405411 is 114504205121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (114504205121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121502405411 - 2²⁶ = 121435296547 is a prime.

It is a super-4 number, since 4×121502405411⁴ (a number of 45 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (121502405441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60751202705 + 60751202706.

It is an arithmetic number, because the mean of its divisors is an integer number (60751202706).

Almost surely, 2^121502405411 is an apocalyptic number.

121502405411 is a deficient number, since it is larger than the sum of its proper divisors (1).

121502405411 is an equidigital number, since it uses as much as digits as its factorization.

121502405411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 121502405411 in words is "one hundred twenty-one billion, five hundred two million, four hundred five thousand, four hundred eleven".