10102421123 has 4 divisors (see below), whose sum is σ = 10541656848. Its totient is φ = 9663185400.

The previous prime is 10102421117. The next prime is 10102421227. The reversal of 10102421123 is 32112420101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32112420101 = 89 ⋅360813709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10102421123 is a prime.

It is a super-2 number, since 2×10102421123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10102421113) 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, 219617828 + ... + 219617873.

It is an arithmetic number, because the mean of its divisors is an integer number (2635414212).

Almost surely, 2^10102421123 is an apocalyptic number.

10102421123 is a deficient number, since it is larger than the sum of its proper divisors (439235725).

10102421123 is an equidigital number, since it uses as much as digits as its factorization.

10102421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439235724.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10102421123 its reverse (32112420101), we get a palindrome (42214841224).

The spelling of 10102421123 in words is "ten billion, one hundred two million, four hundred twenty-one thousand, one hundred twenty-three".