10012112281 has 2 divisors, whose sum is σ = 10012112282. Its totient is φ = 10012112280.

The previous prime is 10012112249. The next prime is 10012112291. The reversal of 10012112281 is 18221121001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9125025625 + 887086656 = 95525^2 + 29784^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012112281 - 2⁵ = 10012112249 is a prime.

It is a super-2 number, since 2×10012112281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10012112291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006056140 + 5006056141.

It is an arithmetic number, because the mean of its divisors is an integer number (5006056141).

Almost surely, 2^10012112281 is an apocalyptic number.

It is an amenable number.

10012112281 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012112281 is an equidigital number, since it uses as much as digits as its factorization.

10012112281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10012112281 its reverse (18221121001), we get a palindrome (28233233282).

The spelling of 10012112281 in words is "ten billion, twelve million, one hundred twelve thousand, two hundred eighty-one".