21221000200022 has 8 divisors (see below), whose sum is σ = 36378857485776. Its totient is φ = 9094714371432.

The previous prime is 21221000199989. The next prime is 21221000200051. The reversal of 21221000200022 is 22000200012212.

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

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1515785728573 = 21221000200022 / (2 + 1 + 2 + 2 + 1 + 0 + 0 + 0 + 2 + 0 + 0 + 0 + 2 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757892864273 + ... + 757892864300.

It is an arithmetic number, because the mean of its divisors is an integer number (4547357185722).

Almost surely, 2^{21221000200022} is an apocalyptic number.

21221000200022 is a deficient number, since it is larger than the sum of its proper divisors (15157857285754).

21221000200022 is a wasteful number, since it uses less digits than its factorization.

21221000200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515785728582.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21221000200022 its reverse (22000200012212), we get a palindrome (43221200212234).

The spelling of 21221000200022 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred thousand, twenty-two".