200112001220021 has 24 divisors (see below), whose sum is σ = 232898622243840. Its totient is φ = 171217275236480.

The previous prime is 200112001220009. The next prime is 200112001220029. The reversal of 200112001220021 is 120022100211002.

It is not a de Polignac number, because 200112001220021 - 2²⁶ = 200111934111157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200112001219978 and 200112001220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200112001220029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266185100 + ... + 266935818.

It is an arithmetic number, because the mean of its divisors is an integer number (9704109260160).

Almost surely, 2^{200112001220021} is an apocalyptic number.

It is an amenable number.

200112001220021 is a deficient number, since it is larger than the sum of its proper divisors (32786621023819).

200112001220021 is a wasteful number, since it uses less digits than its factorization.

200112001220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880345 (or 880334 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200112001220021 its reverse (120022100211002), we get a palindrome (320134101431023).

The spelling of 200112001220021 in words is "two hundred trillion, one hundred twelve billion, one million, two hundred twenty thousand, twenty-one".