1220120222 has 4 divisors (see below), whose sum is σ = 1830180336. Its totient is φ = 610060110.

The previous prime is 1220120221. The next prime is 1220120249. The reversal of 1220120222 is 2220210221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1220120222² = 2977386712266658568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220120197 and 1220120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305030054 + ... + 305030057.

It is an arithmetic number, because the mean of its divisors is an integer number (457545084).

Almost surely, 2^1220120222 is an apocalyptic number.

1220120222 is a deficient number, since it is larger than the sum of its proper divisors (610060114).

1220120222 is an equidigital number, since it uses as much as digits as its factorization.

1220120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610060113.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220120222 is about 34930.2193236745. The cubic root of 1220120222 is about 1068.5648275701.

Adding to 1220120222 its reverse (2220210221), we get a palindrome (3440330443).

It can be divided in two parts, 12201 and 20222, that added together give a palindrome (32423).

The spelling of 1220120222 in words is "one billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-two".