20211222222200 has 24 divisors (see below), whose sum is σ = 46991091667080. Its totient is φ = 8084488888800.

The previous prime is 20211222222197. The next prime is 20211222222283. The reversal of 20211222222200 is 222222211202.

It is a super-2 number, since 2×20211222222200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50528055356 + ... + 50528055755.

It is an arithmetic number, because the mean of its divisors is an integer number (1957962152795).

Almost surely, 2^{20211222222200} is an apocalyptic number.

20211222222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211222222200 is an abundant number, since it is smaller than the sum of its proper divisors (26779869444880).

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

20211222222200 is a wasteful number, since it uses less digits than its factorization.

20211222222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101056111127 (or 101056111118 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20211222222200 its reverse (222222211202), we get a palindrome (20433444433402).

The spelling of 20211222222200 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred".