102121110123 has 8 divisors (see below), whose sum is σ = 136202468928. Its totient is φ = 68060245704.

The previous prime is 102121110109. The next prime is 102121110127. The reversal of 102121110123 is 321011121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102121110123 - 2⁶ = 102121110059 is a prime.

It is a super-2 number, since 2×102121110123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102121110127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5111965 + ... + 5131902.

It is an arithmetic number, because the mean of its divisors is an integer number (17025308616).

Almost surely, 2^102121110123 is an apocalyptic number.

102121110123 is a deficient number, since it is larger than the sum of its proper divisors (34081358805).

102121110123 is a wasteful number, since it uses less digits than its factorization.

102121110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10247193.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 102121110123 its reverse (321011121201), we get a palindrome (423132231324).

The spelling of 102121110123 in words is "one hundred two billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".