222111120220220 has 48 divisors (see below), whose sum is σ = 581527296580608. Its totient is φ = 69229440068160.

The previous prime is 222111120220127. The next prime is 222111120220247. The reversal of 222111120220220 is 22022021111222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222111120220192 and 222111120220201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72113998532 + ... + 72114001611.

It is an arithmetic number, because the mean of its divisors is an integer number (12115152012096).

Almost surely, 2^{222111120220220} is an apocalyptic number.

222111120220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111120220220 is an abundant number, since it is smaller than the sum of its proper divisors (359416176360388).

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

222111120220220 is a wasteful number, since it uses less digits than its factorization.

222111120220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144228000170 (or 144228000168 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222111120220220 its reverse (22022021111222), we get a palindrome (244133141331442).

The spelling of 222111120220220 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred twenty million, two hundred twenty thousand, two hundred twenty".