1022220344420 has 144 divisors (see below), whose sum is σ = 2444387839488. Its totient is φ = 358438080000.

The previous prime is 1022220344371. The next prime is 1022220344479. The reversal of 1022220344420 is 244430222201.

It is a super-2 number, since 2×1022220344420² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022220344420.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21056375 + ... + 21104865.

It is an arithmetic number, because the mean of its divisors is an integer number (16974915552).

Almost surely, 2^{1022220344420} is an apocalyptic number.

1022220344420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022220344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222193919744).

1022220344420 is an abundant number, since it is smaller than the sum of its proper divisors (1422167495068).

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

1022220344420 is a wasteful number, since it uses less digits than its factorization.

1022220344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48834 (or 48821 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 1022220344420 its reverse (244430222201), we get a palindrome (1266650566621).

The spelling of 1022220344420 in words is "one trillion, twenty-two billion, two hundred twenty million, three hundred forty-four thousand, four hundred twenty".