212222120000 has 140 divisors (see below), whose sum is σ = 574083247056. Its totient is φ = 77171520000.

The previous prime is 212222119999. The next prime is 212222120021. The reversal of 212222120000 is 21222212.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 198839 + ... + 681161.

Almost surely, 2^212222120000 is an apocalyptic number.

212222120000 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 212222120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287041623528).

212222120000 is an abundant number, since it is smaller than the sum of its proper divisors (361861127056).

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

212222120000 is an equidigital number, since it uses as much as digits as its factorization.

212222120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482366 (or 482341 counting only the distinct ones).

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

Adding to 212222120000 its reverse (21222212), we get a palindrome (212243342212).

212222120000 divided by its reverse (21222212) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 2122 and 22120000, that added together give a palindrome (22122122).

The spelling of 212222120000 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred twenty thousand".