222201221211020 has 48 divisors (see below), whose sum is σ = 468410369410368. Its totient is φ = 88539973816320.

The previous prime is 222201221211019. The next prime is 222201221211023. The reversal of 222201221211020 is 20112122102222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222201221210983 and 222201221211001.

It is not an unprimeable number, because it can be changed into a prime (222201221211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186330260 + ... + 187518980.

It is an arithmetic number, because the mean of its divisors is an integer number (9758549362716).

Almost surely, 2^{222201221211020} is an apocalyptic number.

222201221211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222201221211020 is an abundant number, since it is smaller than the sum of its proper divisors (246209148199348).

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

222201221211020 is a wasteful number, since it uses less digits than its factorization.

222201221211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224530 (or 1224528 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222201221211020 its reverse (20112122102222), we get a palindrome (242313343313242).

The spelling of 222201221211020 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twenty-one million, two hundred eleven thousand, twenty".