2222100121020 has 192 divisors, whose sum is σ = 6993368008704. Its totient is φ = 523080391680.

The previous prime is 2222100120983. The next prime is 2222100121039. The reversal of 2222100121020 is 201210012222.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101403865 + ... + 101425775.

It is an arithmetic number, because the mean of its divisors is an integer number (36423791712).

Almost surely, 2^{2222100121020} is an apocalyptic number.

2222100121020 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 2222100121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3496684004352).

2222100121020 is an abundant number, since it is smaller than the sum of its proper divisors (4771267887684).

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

2222100121020 is a wasteful number, since it uses less digits than its factorization.

2222100121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27612 (or 27610 counting only the distinct ones).

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

Adding to 2222100121020 its reverse (201210012222), we get a palindrome (2423310133242).

The spelling of 2222100121020 in words is "two trillion, two hundred twenty-two billion, one hundred million, one hundred twenty-one thousand, twenty".