21201100200222 has 32 divisors (see below), whose sum is σ = 43126382437632. Its totient is φ = 6947338029504.

The previous prime is 21201100200209. The next prime is 21201100200233. The reversal of 21201100200222 is 22200200110212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125119668 + ... + 125288999.

It is an arithmetic number, because the mean of its divisors is an integer number (1347699451176).

Almost surely, 2^{21201100200222} is an apocalyptic number.

21201100200222 is an abundant number, since it is smaller than the sum of its proper divisors (21925282237410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21201100200222 is a wasteful number, since it uses less digits than its factorization.

21201100200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250408912.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21201100200222 its reverse (22200200110212), we get a palindrome (43401300310434).

The spelling of 21201100200222 in words is "twenty-one trillion, two hundred one billion, one hundred million, two hundred thousand, two hundred twenty-two".