212121000112001 has 32 divisors (see below), whose sum is σ = 223219252569600. Its totient is φ = 201377002240000.

The previous prime is 212121000111983. The next prime is 212121000112013. The reversal of 212121000112001 is 100211000121212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212121000112001 is a prime.

It is a super-3 number, since 3×212121000112001³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (212121000112051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1036054520 + ... + 1036259238.

It is an arithmetic number, because the mean of its divisors is an integer number (6975601642800).

Almost surely, 2^{212121000112001} is an apocalyptic number.

It is an amenable number.

212121000112001 is a deficient number, since it is larger than the sum of its proper divisors (11098252457599).

212121000112001 is a wasteful number, since it uses less digits than its factorization.

212121000112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209161.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212121000112001 its reverse (100211000121212), we get a palindrome (312332000233213).

The spelling of 212121000112001 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred twelve thousand, one".