21000201020222 has 16 divisors (see below), whose sum is σ = 34429172072832. Its totient is φ = 9563658908160.

The previous prime is 21000201020207. The next prime is 21000201020251. The reversal of 21000201020222 is 22202010200012.

It is a junction number, because it is equal to n+sod(n) for n = 21000201020197 and 21000201020206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9962143643 + ... + 9962145750.

It is an arithmetic number, because the mean of its divisors is an integer number (2151823254552).

Almost surely, 2^{21000201020222} is an apocalyptic number.

21000201020222 is a deficient number, since it is larger than the sum of its proper divisors (13428971052610).

21000201020222 is a wasteful number, since it uses less digits than its factorization.

21000201020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19924289443.

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

Adding to 21000201020222 its reverse (22202010200012), we get a palindrome (43202211220234).

The spelling of 21000201020222 in words is "twenty-one trillion, two hundred one million, twenty thousand, two hundred twenty-two".