21200001022 has 8 divisors (see below), whose sum is σ = 32896553400. Its totient is φ = 10234483224.

The previous prime is 21200001019. The next prime is 21200001041. The reversal of 21200001022 is 22010000212.

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

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, 182758572 + ... + 182758687.

It is an arithmetic number, because the mean of its divisors is an integer number (4112069175).

Almost surely, 2^21200001022 is an apocalyptic number.

21200001022 is a deficient number, since it is larger than the sum of its proper divisors (11696552378).

21200001022 is a wasteful number, since it uses less digits than its factorization.

21200001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365517290.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21200001022 its reverse (22010000212), we get a palindrome (43210001234).

The spelling of 21200001022 in words is "twenty-one billion, two hundred million, one thousand, twenty-two".