1231202120133 has 8 divisors (see below), whose sum is σ = 1641668994688. Its totient is φ = 820768329504.

The previous prime is 1231202120131. The next prime is 1231202120147. The reversal of 1231202120133 is 3310212021321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231202120133 - 2¹ = 1231202120131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231202120131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8184016 + ... + 8333097.

It is an arithmetic number, because the mean of its divisors is an integer number (205208624336).

Almost surely, 2^{1231202120133} is an apocalyptic number.

It is an amenable number.

1231202120133 is a deficient number, since it is larger than the sum of its proper divisors (410466874555).

1231202120133 is a wasteful number, since it uses less digits than its factorization.

1231202120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16541963.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1231202120133 its reverse (3310212021321), we get a palindrome (4541414141454).

The spelling of 1231202120133 in words is "one trillion, two hundred thirty-one billion, two hundred two million, one hundred twenty thousand, one hundred thirty-three".