10662123211 has 2 divisors, whose sum is σ = 10662123212. Its totient is φ = 10662123210.

The previous prime is 10662123191. The next prime is 10662123247. The reversal of 10662123211 is 11232126601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10662123211 - 2²¹ = 10660026059 is a prime.

It is a super-2 number, since 2×10662123211² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10662123281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5331061605 + 5331061606.

It is an arithmetic number, because the mean of its divisors is an integer number (5331061606).

Almost surely, 2^10662123211 is an apocalyptic number.

10662123211 is a deficient number, since it is larger than the sum of its proper divisors (1).

10662123211 is an equidigital number, since it uses as much as digits as its factorization.

10662123211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 10662123211 its reverse (11232126601), we get a palindrome (21894249812).

The spelling of 10662123211 in words is "ten billion, six hundred sixty-two million, one hundred twenty-three thousand, two hundred eleven".