12121010213 has 8 divisors (see below), whose sum is σ = 13060413408. Its totient is φ = 11182609584.

The previous prime is 12121010207. The next prime is 12121010221. The reversal of 12121010213 is 31201012121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121010213 - 2⁴ = 12121010197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121010203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225431 + ... + 273972.

It is an arithmetic number, because the mean of its divisors is an integer number (1632551676).

Almost surely, 2^12121010213 is an apocalyptic number.

12121010213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12121010213 is a deficient number, since it is larger than the sum of its proper divisors (939403195).

12121010213 is a wasteful number, since it uses less digits than its factorization.

12121010213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501283.

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

Adding to 12121010213 its reverse (31201012121), we get a palindrome (43322022334).

The spelling of 12121010213 in words is "twelve billion, one hundred twenty-one million, ten thousand, two hundred thirteen".