20212222100000 has 144 divisors (see below), whose sum is σ = 56843238424896. Its totient is φ = 6929904480000.

The previous prime is 20212222099973. The next prime is 20212222100029. The reversal of 20212222100000 is 122221202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13737302 + ... + 15137301.

It is an arithmetic number, because the mean of its divisors is an integer number (394744711284).

Almost surely, 2^{20212222100000} is an apocalyptic number.

20212222100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212222100000 is an abundant number, since it is smaller than the sum of its proper divisors (36631016324896).

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

20212222100000 is an frugal number, since it uses more digits than its factorization.

20212222100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28874645 (or 28874617 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20212222100000 its reverse (122221202), we get a palindrome (20212344321202).

The spelling of 20212222100000 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, one hundred thousand".