222222012121000 has 128 divisors (see below), whose sum is σ = 524145409781760. Its totient is φ = 88180241184000.

The previous prime is 222222012120971. The next prime is 222222012121037. The reversal of 222222012121000 is 121210222222.

222222012121000 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 2×222222012121000² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1382060610 + ... + 1382221390.

It is an arithmetic number, because the mean of its divisors is an integer number (4094886013920).

Almost surely, 2^{222222012121000} is an apocalyptic number.

222222012121000 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 222222012121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262072704890880).

222222012121000 is an abundant number, since it is smaller than the sum of its proper divisors (301923397660760).

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

222222012121000 is a wasteful number, since it uses less digits than its factorization.

222222012121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171812 (or 171798 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222012121000 its reverse (121210222222), we get a palindrome (222343222343222).

The spelling of 222222012121000 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, twelve million, one hundred twenty-one thousand".