2131330021553 has 8 divisors (see below), whose sum is σ = 2279967350472. Its totient is φ = 1985277689856.

The previous prime is 2131330021537. The next prime is 2131330021603. The reversal of 2131330021553 is 3551200331312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 642910501489 + 1488419520064 = 801817^2 + 1220008^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2131330021553 - 2⁴ = 2131330021537 is a prime.

It is a super-2 number, since 2×2131330021553² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131330021753) 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, 646247600 + ... + 646250897.

It is an arithmetic number, because the mean of its divisors is an integer number (284995918809).

Almost surely, 2^{2131330021553} is an apocalyptic number.

It is an amenable number.

2131330021553 is a deficient number, since it is larger than the sum of its proper divisors (148637328919).

2131330021553 is a wasteful number, since it uses less digits than its factorization.

2131330021553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292498611.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 2131330021553 its reverse (3551200331312), we get a palindrome (5682530352865).

The spelling of 2131330021553 in words is "two trillion, one hundred thirty-one billion, three hundred thirty million, twenty-one thousand, five hundred fifty-three".