20210112221200 has 120 divisors (see below), whose sum is σ = 53349939447840. Its totient is φ = 7296260044800.

The previous prime is 20210112221197. The next prime is 20210112221219. The reversal of 20210112221200 is 212221101202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15910729 + ... + 17133928.

It is an arithmetic number, because the mean of its divisors is an integer number (444582828732).

Almost surely, 2^{20210112221200} is an apocalyptic number.

20210112221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210112221200 is an abundant number, since it is smaller than the sum of its proper divisors (33139827226640).

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

20210112221200 is a wasteful number, since it uses less digits than its factorization.

20210112221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33044825 (or 33044814 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20210112221200 its reverse (212221101202), we get a palindrome (20422333322402).

The spelling of 20210112221200 in words is "twenty trillion, two hundred ten billion, one hundred twelve million, two hundred twenty-one thousand, two hundred".