1222012344220 has 24 divisors (see below), whose sum is σ = 2567502101808. Its totient is φ = 488561856000.

The previous prime is 1222012344197. The next prime is 1222012344227. The reversal of 1222012344220 is 224432102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222012344227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15151381 + ... + 15231820.

It is an arithmetic number, because the mean of its divisors is an integer number (106979254242).

Almost surely, 2^{1222012344220} is an apocalyptic number.

1222012344220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222012344220 is an abundant number, since it is smaller than the sum of its proper divisors (1345489757588).

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

1222012344220 is a wasteful number, since it uses less digits than its factorization.

1222012344220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30385221 (or 30385219 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1222012344220 its reverse (224432102221), we get a palindrome (1446444446441).

The spelling of 1222012344220 in words is "one trillion, two hundred twenty-two billion, twelve million, three hundred forty-four thousand, two hundred twenty".