10211312123 has 16 divisors (see below), whose sum is σ = 10943644320. Its totient is φ = 9493979136.

The previous prime is 10211312117. The next prime is 10211312141. The reversal of 10211312123 is 32121311201.

It is a cyclic number.

It is not a de Polignac number, because 10211312123 - 2¹² = 10211308027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10211312143) 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, 932840 + ... + 943722.

It is an arithmetic number, because the mean of its divisors is an integer number (683977770).

Almost surely, 2^10211312123 is an apocalyptic number.

10211312123 is a deficient number, since it is larger than the sum of its proper divisors (732332197).

10211312123 is a wasteful number, since it uses less digits than its factorization.

10211312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11566.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10211312123 its reverse (32121311201), we get a palindrome (42332623324).

The spelling of 10211312123 in words is "ten billion, two hundred eleven million, three hundred twelve thousand, one hundred twenty-three".