222221201321020 has 48 divisors (see below), whose sum is σ = 511024268418048. Its totient is φ = 80500455901760.

The previous prime is 222221201320981. The next prime is 222221201321069. The reversal of 222221201321020 is 20123102122222.

It is a happy number.

222221201321020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 222221201320982 and 222221201321000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920277444 + ... + 1920393163.

It is an arithmetic number, because the mean of its divisors is an integer number (10646338925376).

Almost surely, 2^{222221201321020} is an apocalyptic number.

222221201321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221201321020 is an abundant number, since it is smaller than the sum of its proper divisors (288803067097028).

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

222221201321020 is a wasteful number, since it uses less digits than its factorization.

222221201321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840670890 (or 3840670888 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 222221201321020 its reverse (20123102122222), we get a palindrome (242344303443242).

The spelling of 222221201321020 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred one million, three hundred twenty-one thousand, twenty".