1201321200031 has 16 divisors (see below), whose sum is σ = 1273824455904. Its totient is φ = 1129023028224.

The previous prime is 1201321199959. The next prime is 1201321200059. The reversal of 1201321200031 is 1300021231021.

It is a cyclic number.

It is not a de Polignac number, because 1201321200031 - 2²⁹ = 1200784329119 is a prime.

It is a super-2 number, since 2×1201321200031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201321199978 and 1201321200014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201321200931) 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, 47184901 + ... + 47210353.

It is an arithmetic number, because the mean of its divisors is an integer number (79614028494).

Almost surely, 2^{1201321200031} is an apocalyptic number.

1201321200031 is a deficient number, since it is larger than the sum of its proper divisors (72503255873).

1201321200031 is a wasteful number, since it uses less digits than its factorization.

1201321200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29370.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1201321200031 its reverse (1300021231021), we get a palindrome (2501342431052).

The spelling of 1201321200031 in words is "one trillion, two hundred one billion, three hundred twenty-one million, two hundred thousand, thirty-one".