1203111123120 has 120 divisors (see below), whose sum is σ = 4040844065856. Its totient is φ = 320798198784.

The previous prime is 1203111123119. The next prime is 1203111123131. The reversal of 1203111123120 is 213211113021.

1203111123120 is a `hidden beast` number, since 120 + 311 + 1 + 1 + 231 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1203111123093 and 1203111123102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7798249 + ... + 7951031.

Almost surely, 2^{1203111123120} is an apocalyptic number.

1203111123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203111123120 is an abundant number, since it is smaller than the sum of its proper divisors (2837732942736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203111123120 is a wasteful number, since it uses less digits than its factorization.

1203111123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163739 (or 163730 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1203111123120 its reverse (213211113021), we get a palindrome (1416322236141).

It can be divided in two parts, 1203111 and 123120, that added together give a palindrome (1326231).

The spelling of 1203111123120 in words is "one trillion, two hundred three billion, one hundred eleven million, one hundred twenty-three thousand, one hundred twenty".