24221000981 has 2 divisors, whose sum is σ = 24221000982. Its totient is φ = 24221000980.

The previous prime is 24221000963. The next prime is 24221001037. The reversal of 24221000981 is 18900012242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17851364881 + 6369636100 = 133609^2 + 79810^2 .

It is a cyclic number.

It is not a de Polignac number, because 24221000981 - 2⁶ = 24221000917 is a prime.

It is a super-2 number, since 2×24221000981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24221000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12110500490 + 12110500491.

It is an arithmetic number, because the mean of its divisors is an integer number (12110500491).

Almost surely, 2^24221000981 is an apocalyptic number.

It is an amenable number.

24221000981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24221000981 is an equidigital number, since it uses as much as digits as its factorization.

24221000981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 24221000981 in words is "twenty-four billion, two hundred twenty-one million, nine hundred eighty-one", and thus it is an aban number.