1202020011123 has 4 divisors (see below), whose sum is σ = 1602693348168. Its totient is φ = 801346674080.

The previous prime is 1202020011113. The next prime is 1202020011131. The reversal of 1202020011123 is 3211100202021.

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 1202020011123 - 2¹⁷ = 1202019880051 is a prime.

It is a super-2 number, since 2×1202020011123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1202020011113) 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, 200336668518 + ... + 200336668523.

It is an arithmetic number, because the mean of its divisors is an integer number (400673337042).

Almost surely, 2^{1202020011123} is an apocalyptic number.

1202020011123 is a deficient number, since it is larger than the sum of its proper divisors (400673337045).

1202020011123 is an equidigital number, since it uses as much as digits as its factorization.

1202020011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400673337044.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1202020011123 its reverse (3211100202021), we get a palindrome (4413120213144).

The spelling of 1202020011123 in words is "one trillion, two hundred two billion, twenty million, eleven thousand, one hundred twenty-three".