1023202020123 has 12 divisors (see below), whose sum is σ = 1477988166720. Its totient is φ = 682120975536.

The previous prime is 1023202020077. The next prime is 1023202020143. The reversal of 1023202020123 is 3210202023201.

1023202020123 is a `hidden beast` number, since 102 + 320 + 20 + 201 + 23 = 666.

It is not a de Polignac number, because 1023202020123 - 2⁹ = 1023202019611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023202020096 and 1023202020105.

It is not an unprimeable number, because it can be changed into a prime (1023202020143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658411 + ... + 1574772.

It is an arithmetic number, because the mean of its divisors is an integer number (123165680560).

Almost surely, 2^{1023202020123} is an apocalyptic number.

1023202020123 is a deficient number, since it is larger than the sum of its proper divisors (454786146597).

1023202020123 is a wasteful number, since it uses less digits than its factorization.

1023202020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284098 (or 2284095 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1023202020123 its reverse (3210202023201), we get a palindrome (4233404043324).

The spelling of 1023202020123 in words is "one trillion, twenty-three billion, two hundred two million, twenty thousand, one hundred twenty-three".