222220121000220 has 192 divisors, whose sum is σ = 791844910940160. Its totient is φ = 50682025327104.

The previous prime is 222220121000209. The next prime is 222220121000233. The reversal of 222220121000220 is 22000121022222.

222220121000220 is a `hidden beast` number, since 2 + 222 + 201 + 21 + 0 + 0 + 0 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 222220121000193 and 222220121000202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62592444 + ... + 66047363.

It is an arithmetic number, because the mean of its divisors is an integer number (4124192244480).

Almost surely, 2^{222220121000220} is an apocalyptic number.

222220121000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220121000220 is an abundant number, since it is smaller than the sum of its proper divisors (569624789939940).

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

222220121000220 is a wasteful number, since it uses less digits than its factorization.

222220121000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128640289 (or 128640281 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222220121000220 its reverse (22000121022222), we get a palindrome (244220242022442).

It can be divided in two parts, 22222012 and 1000220, that added together give a palindrome (23222232).

The spelling of 222220121000220 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty", and thus it is an aban number.