220220020002100 has 144 divisors (see below), whose sum is σ = 492254431200000. Its totient is φ = 85477003223040.

The previous prime is 220220020002097. The next prime is 220220020002131. The reversal of 220220020002100 is 1200020022022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1887180556 + ... + 1887297244.

It is an arithmetic number, because the mean of its divisors is an integer number (3418433550000).

Almost surely, 2^{220220020002100} is an apocalyptic number.

220220020002100 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 220220020002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246127215600000).

220220020002100 is an abundant number, since it is smaller than the sum of its proper divisors (272034411197900).

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

220220020002100 is a wasteful number, since it uses less digits than its factorization.

220220020002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120890 (or 120883 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 220220020002100 its reverse (1200020022022), we get a palindrome (221420040024122).

The spelling of 220220020002100 in words is "two hundred twenty trillion, two hundred twenty billion, twenty million, two thousand, one hundred".