222201022211220 has 192 divisors, whose sum is σ = 693192407281920. Its totient is φ = 52804500037632.

The previous prime is 222201022211183. The next prime is 222201022211261. The reversal of 222201022211220 is 22112220102222.

It is a super-2 number, since 2×222201022211220² (a number of 29 digits) contains 22 as substring.

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, 237336867 + ... + 238271253.

It is an arithmetic number, because the mean of its divisors is an integer number (3610377121260).

Almost surely, 2^{222201022211220} is an apocalyptic number.

222201022211220 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 222201022211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346596203640960).

222201022211220 is an abundant number, since it is smaller than the sum of its proper divisors (470991385070700).

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

222201022211220 is a wasteful number, since it uses less digits than its factorization.

222201022211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944954 (or 944952 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222201022211220 its reverse (22112220102222), we get a palindrome (244313242313442).

The spelling of 222201022211220 in words is "two hundred twenty-two trillion, two hundred one billion, twenty-two million, two hundred eleven thousand, two hundred twenty".