10123221166 has 32 divisors (see below), whose sum is σ = 16934499360. Its totient is φ = 4510411776.

The previous prime is 10123221091. The next prime is 10123221167. The reversal of 10123221166 is 66112232101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10123221166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123221167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376836 + ... + 1384168.

It is an arithmetic number, because the mean of its divisors is an integer number (529203105).

Almost surely, 2^10123221166 is an apocalyptic number.

10123221166 is a deficient number, since it is larger than the sum of its proper divisors (6811278194).

10123221166 is a wasteful number, since it uses less digits than its factorization.

10123221166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9508.

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

Adding to 10123221166 its reverse (66112232101), we get a palindrome (76235453267).

The spelling of 10123221166 in words is "ten billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred sixty-six".