12122121012213 has 8 divisors (see below), whose sum is σ = 16177642711776. Its totient is φ = 8074006660400.

The previous prime is 12122121012187. The next prime is 12122121012227. The reversal of 12122121012213 is 31221012122121.

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 12122121012213 - 2⁹ = 12122121011701 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122121012213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122121012233) 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, 1851833118 + ... + 1851839663.

It is an arithmetic number, because the mean of its divisors is an integer number (2022205338972).

Almost surely, 2^{12122121012213} is an apocalyptic number.

It is an amenable number.

12122121012213 is a deficient number, since it is larger than the sum of its proper divisors (4055521699563).

12122121012213 is a wasteful number, since it uses less digits than its factorization.

12122121012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703673875.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12122121012213 its reverse (31221012122121), we get a palindrome (43343133134334).

The spelling of 12122121012213 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred thirteen".