1081212066081 has 24 divisors (see below), whose sum is σ = 1821283692800. Its totient is φ = 617835464568.

The previous prime is 1081212066013. The next prime is 1081212066127. The reversal of 1081212066081 is 1806602121801.

1081212066081 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 21 + 20 + 6 + 608 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1081212066081 is a prime.

It is a super-2 number, since 2×1081212066081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081212016081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175120345 + ... + 175126518.

Almost surely, 2^{1081212066081} is an apocalyptic number.

It is an amenable number.

1081212066081 is a deficient number, since it is larger than the sum of its proper divisors (740071626719).

1081212066081 is an equidigital number, since it uses as much as digits as its factorization.

1081212066081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350246890 (or 350246873 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

Adding to 1081212066081 its reverse (1806602121801), we get a palindrome (2887814187882).

The spelling of 1081212066081 in words is "one trillion, eighty-one billion, two hundred twelve million, sixty-six thousand, eighty-one".