222012221020 has 24 divisors (see below), whose sum is σ = 477597023568. Its totient is φ = 86638915200.

The previous prime is 222012221009. The next prime is 222012221023. The reversal of 222012221020 is 20122210222.

It is a junction number, because it is equal to n+sod(n) for n = 222012220985 and 222012221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012221023) 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, 135372486 + ... + 135374125.

It is an arithmetic number, because the mean of its divisors is an integer number (19899875982).

Almost surely, 2^222012221020 is an apocalyptic number.

222012221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012221020 is an abundant number, since it is smaller than the sum of its proper divisors (255584802548).

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

222012221020 is a wasteful number, since it uses less digits than its factorization.

222012221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270746661 (or 270746659 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222012221020 its reverse (20122210222), we get a palindrome (242134431242).

It can be divided in two parts, 2 and 22012221020, that added together give a palindrome (22012221022).

The spelling of 222012221020 in words is "two hundred twenty-two billion, twelve million, two hundred twenty-one thousand, twenty".