1203201211023 has 12 divisors (see below), whose sum is σ = 1986236919888. Its totient is φ = 687543549120.

The previous prime is 1203201211001. The next prime is 1203201211027. The reversal of 1203201211023 is 3201121023021.

1203201211023 is a `hidden beast` number, since 120 + 320 + 121 + 102 + 3 = 666.

It is not a de Polignac number, because 1203201211023 - 2¹⁴ = 1203201194639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203201210987 and 1203201211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203201211027) 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, 9549215898 + ... + 9549216023.

It is an arithmetic number, because the mean of its divisors is an integer number (165519743324).

Almost surely, 2^{1203201211023} is an apocalyptic number.

1203201211023 is a deficient number, since it is larger than the sum of its proper divisors (783035708865).

1203201211023 is a wasteful number, since it uses less digits than its factorization.

1203201211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19098431934 (or 19098431931 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1203201211023 its reverse (3201121023021), we get a palindrome (4404322234044).

The spelling of 1203201211023 in words is "one trillion, two hundred three billion, two hundred one million, two hundred eleven thousand, twenty-three".