2321012201220 has 84 divisors (see below), whose sum is σ = 7307845458060. Its totient is φ = 618936583104.

The previous prime is 2321012201201. The next prime is 2321012201231. The reversal of 2321012201220 is 221022101232.

2321012201220 is a `hidden beast` number, since 2 + 321 + 0 + 1 + 220 + 122 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 615120215616 + 1705891985604 = 784296^2 + 1306098^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2321012201193 and 2321012201202.

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 27 ways as a sum of consecutive naturals, for example, 79581175 + ... + 79610334.

It is an arithmetic number, because the mean of its divisors is an integer number (86998160215).

Almost surely, 2^{2321012201220} is an apocalyptic number.

2321012201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321012201220 is an abundant number, since it is smaller than the sum of its proper divisors (4986833256840).

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

2321012201220 is a wasteful number, since it uses less digits than its factorization.

2321012201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159191536 (or 159191519 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2321012201220 its reverse (221022101232), we get a palindrome (2542034302452).

The spelling of 2321012201220 in words is "two trillion, three hundred twenty-one billion, twelve million, two hundred one thousand, two hundred twenty".