222100122001020 has 192 divisors, whose sum is σ = 643333636915200. Its totient is φ = 57216570727680.

The previous prime is 222100122000917. The next prime is 222100122001027. The reversal of 222100122001020 is 20100221001222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100122001027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 795407791 + ... + 795686969.

It is an arithmetic number, because the mean of its divisors is an integer number (3350696025600).

Almost surely, 2^{222100122001020} is an apocalyptic number.

222100122001020 is a gapful number since it is divisible by the number (20) 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 222100122001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321666818457600).

222100122001020 is an abundant number, since it is smaller than the sum of its proper divisors (421233514914180).

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

222100122001020 is a wasteful number, since it uses less digits than its factorization.

222100122001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282888 (or 282886 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222100122001020 its reverse (20100221001222), we get a palindrome (242200343002242).

The spelling of 222100122001020 in words is "two hundred twenty-two trillion, one hundred billion, one hundred twenty-two million, one thousand, twenty".