121263013 has 4 divisors (see below), whose sum is σ = 121940640. Its totient is φ = 120585388.

The previous prime is 121263011. The next prime is 121263019. The reversal of 121263013 is 310362121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310362121 = 8017 ⋅38713.

It is a cyclic number.

It is not a de Polignac number, because 121263013 - 2¹ = 121263011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121263011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338545 + ... + 338902.

It is an arithmetic number, because the mean of its divisors is an integer number (30485160).

Almost surely, 2^121263013 is an apocalyptic number.

It is an amenable number.

121263013 is a deficient number, since it is larger than the sum of its proper divisors (677627).

121263013 is an equidigital number, since it uses as much as digits as its factorization.

121263013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677626.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 121263013 is about 11011.9486468109. The cubic root of 121263013 is about 494.9668555844.

The spelling of 121263013 in words is "one hundred twenty-one million, two hundred sixty-three thousand, thirteen".