222220121001020 has 48 divisors (see below), whose sum is σ = 467024129725440. Its totient is φ = 88819122659904.

The previous prime is 222220121001007. The next prime is 222220121001041. The reversal of 222220121001020 is 20100121022222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222220121001020.

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, 2395108991 + ... + 2395201769.

It is an arithmetic number, because the mean of its divisors is an integer number (9729669369280).

Almost surely, 2^{222220121001020} is an apocalyptic number.

222220121001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220121001020 is an abundant number, since it is smaller than the sum of its proper divisors (244804008724420).

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

222220121001020 is a wasteful number, since it uses less digits than its factorization.

222220121001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184362 (or 184360 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222220121001020 its reverse (20100121022222), we get a palindrome (242320242023242).

The spelling of 222220121001020 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, one thousand, twenty".