20212222021200 has 540 divisors, whose sum is σ = 79953796386464. Its totient is φ = 4899929760000.

The previous prime is 20212222021181. The next prime is 20212222021237. The reversal of 20212222021200 is 212022221202.

20212222021200 is a `hidden beast` number, since 20 + 21 + 222 + 202 + 1 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 10901925 + ... + 12620475.

Almost surely, 2^{20212222021200} is an apocalyptic number.

20212222021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212222021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39976898193232).

20212222021200 is an abundant number, since it is smaller than the sum of its proper divisors (59741574365264).

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

20212222021200 is a wasteful number, since it uses less digits than its factorization.

20212222021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718606 (or 1718572 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20212222021200 its reverse (212022221202), we get a palindrome (20424244242402).

The spelling of 20212222021200 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, twenty-one thousand, two hundred".