213012412121 has 8 divisors (see below), whose sum is σ = 216533606400. Its totient is φ = 209516280160.

The previous prime is 213012412051. The next prime is 213012412189. The reversal of 213012412121 is 121214210312.

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 213012412121 - 2¹⁰ = 213012411097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213012412093 and 213012412102.

It is not an unprimeable number, because it can be changed into a prime (213012462121) 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, 6248441 + ... + 6282438.

It is an arithmetic number, because the mean of its divisors is an integer number (27066700800).

Almost surely, 2^213012412121 is an apocalyptic number.

It is an amenable number.

213012412121 is a deficient number, since it is larger than the sum of its proper divisors (3521194279).

213012412121 is a wasteful number, since it uses less digits than its factorization.

213012412121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531159.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 213012412121 its reverse (121214210312), we get a palindrome (334226622433).

The spelling of 213012412121 in words is "two hundred thirteen billion, twelve million, four hundred twelve thousand, one hundred twenty-one".