221002102022120 has 256 divisors, whose sum is σ = 552563748172800. Its totient is φ = 79124787118080.

The previous prime is 221002102022101. The next prime is 221002102022173. The reversal of 221002102022120 is 21220201200122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 18001305422 + ... + 18001317698.

It is an arithmetic number, because the mean of its divisors is an integer number (2158452141300).

Almost surely, 2^{221002102022120} is an apocalyptic number.

221002102022120 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 221002102022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276281874086400).

221002102022120 is an abundant number, since it is smaller than the sum of its proper divisors (331561646150680).

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

221002102022120 is a wasteful number, since it uses less digits than its factorization.

221002102022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18868 (or 18864 counting only the distinct ones).

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

Adding to 221002102022120 its reverse (21220201200122), we get a palindrome (242222303222242).

The spelling of 221002102022120 in words is "two hundred twenty-one trillion, two billion, one hundred two million, twenty-two thousand, one hundred twenty".