121012013 has 2 divisors, whose sum is σ = 121012014. Its totient is φ = 121012012.

The previous prime is 121011997. The next prime is 121012037. The reversal of 121012013 is 310210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120406729 + 605284 = 10973^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012013 - 2⁴ = 121011997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121011985 and 121012003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506006 + 60506007.

It is an arithmetic number, because the mean of its divisors is an integer number (60506007).

Almost surely, 2^121012013 is an apocalyptic number.

It is an amenable number.

121012013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012013 is an equidigital number, since it uses as much as digits as its factorization.

121012013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121012013 is about 11000.5460319022. The cubic root of 121012013 is about 494.6251121988.

Adding to 121012013 its reverse (310210121), we get a palindrome (431222134).

The spelling of 121012013 in words is "one hundred twenty-one million, twelve thousand, thirteen".