21233300220427 has 2 divisors, whose sum is σ = 21233300220428. Its totient is φ = 21233300220426.

The previous prime is 21233300220361. The next prime is 21233300220437. The reversal of 21233300220427 is 72402200333212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21233300220427 - 2²³ = 21233291831819 is a prime.

It is not a weakly prime, because it can be changed into another prime (21233300220437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616650110213 + 10616650110214.

It is an arithmetic number, because the mean of its divisors is an integer number (10616650110214).

Almost surely, 2^{21233300220427} is an apocalyptic number.

21233300220427 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233300220427 is an equidigital number, since it uses as much as digits as its factorization.

21233300220427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

Adding to 21233300220427 its reverse (72402200333212), we get a palindrome (93635500553639).

The spelling of 21233300220427 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred million, two hundred twenty thousand, four hundred twenty-seven".