102002001123 has 32 divisors (see below), whose sum is σ = 156714319872. Its totient is φ = 58433911200.

The previous prime is 102002001097. The next prime is 102002001137. The reversal of 102002001123 is 321100200201.

It is not a de Polignac number, because 102002001123 - 2³⁴ = 84822131939 is a prime.

It is a super-2 number, since 2×102002001123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102002001099 and 102002001108.

It is not an unprimeable number, because it can be changed into a prime (102002001193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1115415 + ... + 1203392.

It is an arithmetic number, because the mean of its divisors is an integer number (4897322496).

Almost surely, 2^102002001123 is an apocalyptic number.

102002001123 is a deficient number, since it is larger than the sum of its proper divisors (54712318749).

102002001123 is a wasteful number, since it uses less digits than its factorization.

102002001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318895.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 102002001123 its reverse (321100200201), we get a palindrome (423102201324).

The spelling of 102002001123 in words is "one hundred two billion, two million, one thousand, one hundred twenty-three".