100121212332213 has 4 divisors (see below), whose sum is σ = 133494949776288. Its totient is φ = 66747474888140.

The previous prime is 100121212332161. The next prime is 100121212332217. The reversal of 100121212332213 is 312233212121001.

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.

It is a cyclic number.

It is not a de Polignac number, because 100121212332213 - 2⁸ = 100121212331957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121212332217) 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, 16686868722033 + ... + 16686868722038.

It is an arithmetic number, because the mean of its divisors is an integer number (33373737444072).

Almost surely, 2^{100121212332213} is an apocalyptic number.

It is an amenable number.

100121212332213 is a deficient number, since it is larger than the sum of its proper divisors (33373737444075).

100121212332213 is an equidigital number, since it uses as much as digits as its factorization.

100121212332213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33373737444074.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 100121212332213 its reverse (312233212121001), we get a palindrome (412354424453214).

The spelling of 100121212332213 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twelve million, three hundred thirty-two thousand, two hundred thirteen".