1222311012220 has 24 divisors (see below), whose sum is σ = 2583202515264. Its totient is φ = 485810235456.

The previous prime is 1222311012077. The next prime is 1222311012271. The reversal of 1222311012220 is 222101132221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194632372 + ... + 194638651.

It is an arithmetic number, because the mean of its divisors is an integer number (107633438136).

Almost surely, 2^{1222311012220} is an apocalyptic number.

1222311012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222311012220 is an abundant number, since it is smaller than the sum of its proper divisors (1360891503044).

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

1222311012220 is a wasteful number, since it uses less digits than its factorization.

1222311012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389271189 (or 389271187 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1222311012220 its reverse (222101132221), we get a palindrome (1444412144441).

The spelling of 1222311012220 in words is "one trillion, two hundred twenty-two billion, three hundred eleven million, twelve thousand, two hundred twenty".