121000111221937 has 2 divisors, whose sum is σ = 121000111221938. Its totient is φ = 121000111221936.

The previous prime is 121000111221931. The next prime is 121000111222129. The reversal of 121000111221937 is 739122111000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89409146720881 + 31590964501056 = 9455641^2 + 5620584^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000111221937 - 2²³ = 121000102833329 is a prime.

It is a super-2 number, since 2×121000111221937² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121000111221899 and 121000111221908.

It is not a weakly prime, because it can be changed into another prime (121000111221931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500055610968 + 60500055610969.

It is an arithmetic number, because the mean of its divisors is an integer number (60500055610969).

Almost surely, 2^{121000111221937} is an apocalyptic number.

It is an amenable number.

121000111221937 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000111221937 is an equidigital number, since it uses as much as digits as its factorization.

121000111221937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 121000111221937 in words is "one hundred twenty-one trillion, one hundred eleven million, two hundred twenty-one thousand, nine hundred thirty-seven".