200001022221 has 128 divisors (see below), whose sum is σ = 389354950656. Its totient is φ = 87822766080.

The previous prime is 200001022201. The next prime is 200001022223. The reversal of 200001022221 is 122220100002.

It is not a de Polignac number, because 200001022221 - 2⁵ = 200001022189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200001022197 and 200001022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200001022223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1835946 + ... + 1941828.

It is an arithmetic number, because the mean of its divisors is an integer number (3041835552).

Almost surely, 2^200001022221 is an apocalyptic number.

200001022221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200001022221 is a deficient number, since it is larger than the sum of its proper divisors (189353928435).

200001022221 is a wasteful number, since it uses less digits than its factorization.

200001022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105971.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200001022221 its reverse (122220100002), we get a palindrome (322221122223).

The spelling of 200001022221 in words is "two hundred billion, one million, twenty-two thousand, two hundred twenty-one".