121005013 has 2 divisors, whose sum is σ = 121005014. Its totient is φ = 121005012.

The previous prime is 121004999. The next prime is 121005043. The reversal of 121005013 is 310500121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120604324 + 400689 = 10982^2 + 633^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121005013 is a prime.

It is a super-2 number, since 2×121005013² = 29284426342260338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121004984 and 121005002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121005043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60502506 + 60502507.

It is an arithmetic number, because the mean of its divisors is an integer number (60502507).

Almost surely, 2^121005013 is an apocalyptic number.

It is an amenable number.

121005013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121005013 is an equidigital number, since it uses as much as digits as its factorization.

121005013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 121005013 is about 11000.2278612763. The cubic root of 121005013 is about 494.6155747364.

Adding to 121005013 its reverse (310500121), we get a palindrome (431505134).

The spelling of 121005013 in words is "one hundred twenty-one million, five thousand, thirteen".