222212121100000 has 144 divisors (see below), whose sum is σ = 546839529936336. Its totient is φ = 88880884480000.

The previous prime is 222212121099953. The next prime is 222212121100033. The reversal of 222212121100000 is 1121212222.

It is a happy number.

222212121100000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×222212121100000² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

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, 3428267592 + ... + 3428332408.

It is an arithmetic number, because the mean of its divisors is an integer number (3797496735669).

Almost surely, 2^{222212121100000} is an apocalyptic number.

222212121100000 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 222212121100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273419764968168).

222212121100000 is an abundant number, since it is smaller than the sum of its proper divisors (324627408836336).

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

222212121100000 is an frugal number, since it uses more digits than its factorization.

222212121100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99135 (or 99107 counting only the distinct ones).

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

Adding to 222212121100000 its reverse (1121212222), we get a palindrome (222213242312222).

The spelling of 222212121100000 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred twenty-one million, one hundred thousand".