1020123202235 has 4 divisors (see below), whose sum is σ = 1224147842688. Its totient is φ = 816098561784.

The previous prime is 1020123202187. The next prime is 1020123202289. The reversal of 1020123202235 is 5322023210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020123202235 - 2³⁶ = 951403725499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020123202235.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102012320219 + ... + 102012320228.

It is an arithmetic number, because the mean of its divisors is an integer number (306036960672).

Almost surely, 2^{1020123202235} is an apocalyptic number.

1020123202235 is a deficient number, since it is larger than the sum of its proper divisors (204024640453).

1020123202235 is an equidigital number, since it uses as much as digits as its factorization.

1020123202235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204024640452.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 1020123202235 its reverse (5322023210201), we get a palindrome (6342146412436).

The spelling of 1020123202235 in words is "one trillion, twenty billion, one hundred twenty-three million, two hundred two thousand, two hundred thirty-five".