102211010123 has 4 divisors (see below), whose sum is σ = 102381646800. Its totient is φ = 102040373448.

The previous prime is 102211010119. The next prime is 102211010179. The reversal of 102211010123 is 321010112201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102211010123 - 2² = 102211010119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102211010098 and 102211010107.

It is not an unprimeable number, because it can be changed into a prime (102211010323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85317440 + ... + 85318637.

It is an arithmetic number, because the mean of its divisors is an integer number (25595411700).

Almost surely, 2^102211010123 is an apocalyptic number.

102211010123 is a deficient number, since it is larger than the sum of its proper divisors (170636677).

102211010123 is an equidigital number, since it uses as much as digits as its factorization.

102211010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170636676.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 102211010123 its reverse (321010112201), we get a palindrome (423221122324).

The spelling of 102211010123 in words is "one hundred two billion, two hundred eleven million, ten thousand, one hundred twenty-three".