303122220000021 has 12 divisors (see below), whose sum is σ = 449676806847372. Its totient is φ = 196619818378176.

The previous prime is 303122219999999. The next prime is 303122220000049. The reversal of 303122220000021 is 120000022221303.

303122220000021 is a `hidden beast` number, since 303 + 122 + 220 + 0 + 0 + 0 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 169834040497521 + 133288179502500 = 13032039^2 + 11545050^2 .

It is not a de Polignac number, because 303122220000021 - 2²¹ = 303122217902869 is a prime.

It is a super-2 number, since 2×303122220000021² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 303122219999949 and 303122220000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303122220000221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455138468136 + ... + 455138468801.

It is an arithmetic number, because the mean of its divisors is an integer number (37473067237281).

Almost surely, 2^{303122220000021} is an apocalyptic number.

It is an amenable number.

303122220000021 is a deficient number, since it is larger than the sum of its proper divisors (146554586847351).

303122220000021 is a wasteful number, since it uses less digits than its factorization.

303122220000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910276936980 (or 910276936977 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 303122220000021 its reverse (120000022221303), we get a palindrome (423122242221324).

The spelling of 303122220000021 in words is "three hundred three trillion, one hundred twenty-two billion, two hundred twenty million, twenty-one", and thus it is an aban number.