10140123121 has 8 divisors (see below), whose sum is σ = 10163724480. Its totient is φ = 10116546288.

The previous prime is 10140123113. The next prime is 10140123221. The reversal of 10140123121 is 12132104101.

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

It is a cyclic number.

It is not a de Polignac number, because 10140123121 - 2³ = 10140123113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10140123095 and 10140123104.

It is not an unprimeable number, because it can be changed into a prime (10140123221) 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, 1008300 + ... + 1018306.

It is an arithmetic number, because the mean of its divisors is an integer number (1270465560).

Almost surely, 2^10140123121 is an apocalyptic number.

It is an amenable number.

10140123121 is a deficient number, since it is larger than the sum of its proper divisors (23601359).

10140123121 is a wasteful number, since it uses less digits than its factorization.

10140123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10140123121 its reverse (12132104101), we get a palindrome (22272227222).

The spelling of 10140123121 in words is "ten billion, one hundred forty million, one hundred twenty-three thousand, one hundred twenty-one".