121012010213 has 4 divisors (see below), whose sum is σ = 121052364000. Its totient is φ = 120971656428.

The previous prime is 121012010201. The next prime is 121012010219. The reversal of 121012010213 is 312010210121.

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: 312010210121 = 2383 ⋅130931687.

It is a cyclic number.

It is not a de Polignac number, because 121012010213 - 2¹⁰ = 121012009189 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 (121012010219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20172395 + ... + 20178392.

It is an arithmetic number, because the mean of its divisors is an integer number (30263091000).

Almost surely, 2^121012010213 is an apocalyptic number.

It is an amenable number.

121012010213 is a deficient number, since it is larger than the sum of its proper divisors (40353787).

121012010213 is an equidigital number, since it uses as much as digits as its factorization.

121012010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40353786.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121012010213 its reverse (312010210121), we get a palindrome (433022220334).

The spelling of 121012010213 in words is "one hundred twenty-one billion, twelve million, ten thousand, two hundred thirteen".