222100222121020 has 48 divisors (see below), whose sum is σ = 467543458464768. Its totient is φ = 88624325679680.

The previous prime is 222100222120967. The next prime is 222100222121023. The reversal of 222100222121020 is 20121222001222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100222121023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78140529 + ... + 80932951.

It is an arithmetic number, because the mean of its divisors is an integer number (9740488718016).

Almost surely, 2^{222100222121020} is an apocalyptic number.

222100222121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222100222121020 is an abundant number, since it is smaller than the sum of its proper divisors (245443236343748).

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

222100222121020 is a wasteful number, since it uses less digits than its factorization.

222100222121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802090 (or 2802088 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222100222121020 its reverse (20121222001222), we get a palindrome (242221444122242).

The spelling of 222100222121020 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty".