222021221121000 has 288 divisors, whose sum is σ = 872951194819080. Its totient is φ = 50747707584000.

The previous prime is 222021221120947. The next prime is 222021221121041. The reversal of 222021221121000 is 121122120222.

It is a happy number.

222021221121000 is a `hidden beast` number, since 2 + 220 + 21 + 2 + 211 + 210 + 0 + 0 = 666.

222021221121000 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46800457659396 + 175220763461604 = 6841086^2 + 13237098^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 251283741 + ... + 252165740.

Almost surely, 2^{222021221121000} is an apocalyptic number.

222021221121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222021221121000 is an abundant number, since it is smaller than the sum of its proper divisors (650929973698080).

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

222021221121000 is a wasteful number, since it uses less digits than its factorization.

222021221121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503449522 (or 503449498 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222021221121000 its reverse (121122120222), we get a palindrome (222142343241222).

The spelling of 222021221121000 in words is "two hundred twenty-two trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand".