2212123202320 has 40 divisors (see below), whose sum is σ = 5200975073880. Its totient is φ = 874907151360.

The previous prime is 2212123202299. The next prime is 2212123202323. The reversal of 2212123202320 is 232023212122.

It can be written as a sum of positive squares in 4 ways, for example, as 3641881104 + 2208481321216 = 60348^2 + 1486096^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2212123202291 and 2212123202300.

It is not an unprimeable number, because it can be changed into a prime (2212123202323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155338611 + ... + 155352850.

It is an arithmetic number, because the mean of its divisors is an integer number (130024376847).

Almost surely, 2^{2212123202320} is an apocalyptic number.

2212123202320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212123202320 is an abundant number, since it is smaller than the sum of its proper divisors (2988851871560).

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

2212123202320 is a wasteful number, since it uses less digits than its factorization.

2212123202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310691563 (or 310691557 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 2212123202320 its reverse (232023212122), we get a palindrome (2444146414442).

The spelling of 2212123202320 in words is "two trillion, two hundred twelve billion, one hundred twenty-three million, two hundred two thousand, three hundred twenty".