2123221101320 has 64 divisors (see below), whose sum is σ = 5338653546240. Its totient is φ = 753249164800.

The previous prime is 2123221101311. The next prime is 2123221101347. The reversal of 2123221101320 is 231011223212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2123221101292 and 2123221101301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58829552 + ... + 58865631.

It is an arithmetic number, because the mean of its divisors is an integer number (83416461660).

Almost surely, 2^{2123221101320} is an apocalyptic number.

2123221101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123221101320 is an abundant number, since it is smaller than the sum of its proper divisors (3215432444920).

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

2123221101320 is a wasteful number, since it uses less digits than its factorization.

2123221101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117695246 (or 117695242 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2123221101320 its reverse (231011223212), we get a palindrome (2354232324532).

The spelling of 2123221101320 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-one million, one hundred one thousand, three hundred twenty".