21220002201 has 8 divisors (see below), whose sum is σ = 29058021184. Its totient is φ = 13764325680.

The previous prime is 21220002121. The next prime is 21220002203. The reversal of 21220002201 is 10220002212.

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

It is not a de Polignac number, because 21220002201 - 2⁷ = 21220002073 is a prime.

It is a super-4 number, since 4×21220002201⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21220002203) 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, 95585485 + ... + 95585706.

It is an arithmetic number, because the mean of its divisors is an integer number (3632252648).

Almost surely, 2^21220002201 is an apocalyptic number.

It is an amenable number.

21220002201 is a deficient number, since it is larger than the sum of its proper divisors (7838018983).

21220002201 is a wasteful number, since it uses less digits than its factorization.

21220002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191171231.

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

Adding to 21220002201 its reverse (10220002212), we get a palindrome (31440004413).

The spelling of 21220002201 in words is "twenty-one billion, two hundred twenty million, two thousand, two hundred one".