1201000131123 has 16 divisors (see below), whose sum is σ = 1815276852480. Its totient is φ = 700178213664.

The previous prime is 1201000131119. The next prime is 1201000131167. The reversal of 1201000131123 is 3211310001021.

It is a happy number.

It is not a de Polignac number, because 1201000131123 - 2² = 1201000131119 is a prime.

It is a super-2 number, since 2×1201000131123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201000131173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810390711 + ... + 810392192.

It is an arithmetic number, because the mean of its divisors is an integer number (113454803280).

Almost surely, 2^{1201000131123} is an apocalyptic number.

1201000131123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201000131123 is a deficient number, since it is larger than the sum of its proper divisors (614276721357).

1201000131123 is a wasteful number, since it uses less digits than its factorization.

1201000131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620782938.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1201000131123 its reverse (3211310001021), we get a palindrome (4412310132144).

The spelling of 1201000131123 in words is "one trillion, two hundred one billion, one hundred thirty-one thousand, one hundred twenty-three".