2121110000220 has 96 divisors (see below), whose sum is σ = 6098703190272. Its totient is φ = 550522764288.

The previous prime is 2121110000197. The next prime is 2121110000267. The reversal of 2121110000220 is 220000111212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2121110000196 and 2121110000205.

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 31 ways as a sum of consecutive naturals, for example, 722397 + ... + 2182676.

It is an arithmetic number, because the mean of its divisors is an integer number (63528158232).

Almost surely, 2^{2121110000220} is an apocalyptic number.

2121110000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121110000220 is an abundant number, since it is smaller than the sum of its proper divisors (3977593190052).

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

2121110000220 is a wasteful number, since it uses less digits than its factorization.

2121110000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905411 (or 2905409 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2121110000220 its reverse (220000111212), we get a palindrome (2341110111432).

The spelling of 2121110000220 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty", and thus it is an aban number.