212200100121101 has 4 divisors (see below), whose sum is σ = 224682458951772. Its totient is φ = 199717741290432.

The previous prime is 212200100121019. The next prime is 212200100121151. The reversal of 212200100121101 is 101121001002212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77332501332100 + 134867598789001 = 8793890^2 + 11613251^2 .

It is a cyclic number.

It is not a de Polignac number, because 212200100121101 - 2⁴⁶ = 141831355943437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200100121151) 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, 6241179415310 + ... + 6241179415343.

It is an arithmetic number, because the mean of its divisors is an integer number (56170614737943).

Almost surely, 2^{212200100121101} is an apocalyptic number.

It is an amenable number.

212200100121101 is a deficient number, since it is larger than the sum of its proper divisors (12482358830671).

212200100121101 is a wasteful number, since it uses less digits than its factorization.

212200100121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12482358830670.

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

Adding to 212200100121101 its reverse (101121001002212), we get a palindrome (313321101123313).

The spelling of 212200100121101 in words is "two hundred twelve trillion, two hundred billion, one hundred million, one hundred twenty-one thousand, one hundred one".