200002101122221 has 8 divisors (see below), whose sum is σ = 201472002060984. Its totient is φ = 198535807303680.

The previous prime is 200002101122203. The next prime is 200002101122261. The reversal of 200002101122221 is 122221101200002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 128244073760100 + 71758027362121 = 11324490^2 + 8471011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200002101122221 - 2⁹ = 200002101121709 is a prime.

It is a super-2 number, since 2×200002101122221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200002101122195 and 200002101122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200002101122261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901668756 + ... + 901890541.

It is an arithmetic number, because the mean of its divisors is an integer number (25184000257623).

Almost surely, 2^{200002101122221} is an apocalyptic number.

It is an amenable number.

200002101122221 is a deficient number, since it is larger than the sum of its proper divisors (1469900938763).

200002101122221 is a wasteful number, since it uses less digits than its factorization.

200002101122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803560111.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200002101122221 its reverse (122221101200002), we get a palindrome (322223202322223).

The spelling of 200002101122221 in words is "two hundred trillion, two billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-one".