1220448074081 has 2 divisors, whose sum is σ = 1220448074082. Its totient is φ = 1220448074080.

The previous prime is 1220448074057. The next prime is 1220448074113. The reversal of 1220448074081 is 1804708440221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1111421977600 + 109026096481 = 1054240^2 + 330191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220448074081 is a prime.

It is a super-2 number, since 2×1220448074081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220448074581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610224037040 + 610224037041.

It is an arithmetic number, because the mean of its divisors is an integer number (610224037041).

Almost surely, 2^{1220448074081} is an apocalyptic number.

It is an amenable number.

1220448074081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220448074081 is an equidigital number, since it uses as much as digits as its factorization.

1220448074081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 114688, while the sum is 41.

The spelling of 1220448074081 in words is "one trillion, two hundred twenty billion, four hundred forty-eight million, seventy-four thousand, eighty-one".