10661212273 has 2 divisors, whose sum is σ = 10661212274. Its totient is φ = 10661212272.

The previous prime is 10661212213. The next prime is 10661212277. The reversal of 10661212273 is 37221216601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10638478449 + 22733824 = 103143^2 + 4768^2 .

It is an emirp because it is prime and its reverse (37221216601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10661212273 - 2⁹ = 10661211761 is a prime.

It is a super-2 number, since 2×10661212273² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10661212277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330606136 + 5330606137.

It is an arithmetic number, because the mean of its divisors is an integer number (5330606137).

Almost surely, 2^10661212273 is an apocalyptic number.

It is an amenable number.

10661212273 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661212273 is an equidigital number, since it uses as much as digits as its factorization.

10661212273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 10661212273 its reverse (37221216601), we get a palindrome (47882428874).

The spelling of 10661212273 in words is "ten billion, six hundred sixty-one million, two hundred twelve thousand, two hundred seventy-three".