200101001121221 has 4 divisors (see below), whose sum is σ = 210632632759200. Its totient is φ = 189569369483244.

The previous prime is 200101001121173. The next prime is 200101001121227. The reversal of 200101001121221 is 122121100101002.

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 200101001121221 - 2²² = 200100996926917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200101001121196 and 200101001121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200101001121227) 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, 5265815818961 + ... + 5265815818998.

It is an arithmetic number, because the mean of its divisors is an integer number (52658158189800).

Almost surely, 2^{200101001121221} is an apocalyptic number.

It is an amenable number.

200101001121221 is a deficient number, since it is larger than the sum of its proper divisors (10531631637979).

200101001121221 is a wasteful number, since it uses less digits than its factorization.

200101001121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531631637978.

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

Adding to 200101001121221 its reverse (122121100101002), we get a palindrome (322222101222223).

The spelling of 200101001121221 in words is "two hundred trillion, one hundred one billion, one million, one hundred twenty-one thousand, two hundred twenty-one".