1220212112222 has 8 divisors (see below), whose sum is σ = 1855391020176. Its totient is φ = 601748438832.

The previous prime is 1220212112221. The next prime is 1220212112233. The reversal of 1220212112222 is 2222112120221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1220212112194 and 1220212112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212112221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4178808458 + ... + 4178808749.

It is an arithmetic number, because the mean of its divisors is an integer number (231923877522).

Almost surely, 2^{1220212112222} is an apocalyptic number.

1220212112222 is a deficient number, since it is larger than the sum of its proper divisors (635178907954).

1220212112222 is an equidigital number, since it uses as much as digits as its factorization.

1220212112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357617282.

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

Adding to 1220212112222 its reverse (2222112120221), we get a palindrome (3442324232443).

The spelling of 1220212112222 in words is "one trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-two".