2012121222320 has 80 divisors (see below), whose sum is σ = 5103800398368. Its totient is φ = 731633233920.

The previous prime is 2012121222313. The next prime is 2012121222367. The reversal of 2012121222320 is 232221212102.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 2012121222292 and 2012121222301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15420392 + ... + 15550328.

Almost surely, 2^{2012121222320} is an apocalyptic number.

2012121222320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012121222320 is an abundant number, since it is smaller than the sum of its proper divisors (3091679176048).

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

2012121222320 is a wasteful number, since it uses less digits than its factorization.

2012121222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147558 (or 147552 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2012121222320 its reverse (232221212102), we get a palindrome (2244342434422).

The spelling of 2012121222320 in words is "two trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty".