1202112031123 has 4 divisors (see below), whose sum is σ = 1272824503560. Its totient is φ = 1131399558688.

The previous prime is 1202112031103. The next prime is 1202112031163. The reversal of 1202112031123 is 3211302112021.

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 1202112031123 - 2⁵ = 1202112031091 is a prime.

It is a super-2 number, since 2×1202112031123² (a number of 25 digits) contains 22 as substring.

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 1202112031123.

It is not an unprimeable number, because it can be changed into a prime (1202112031103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35356236193 + ... + 35356236226.

It is an arithmetic number, because the mean of its divisors is an integer number (318206125890).

Almost surely, 2^{1202112031123} is an apocalyptic number.

1202112031123 is a deficient number, since it is larger than the sum of its proper divisors (70712472437).

1202112031123 is an equidigital number, since it uses as much as digits as its factorization.

1202112031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70712472436.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1202112031123 its reverse (3211302112021), we get a palindrome (4413414143144).

The spelling of 1202112031123 in words is "one trillion, two hundred two billion, one hundred twelve million, thirty-one thousand, one hundred twenty-three".