2121553341 has 12 divisors (see below), whose sum is σ = 3065267868. Its totient is φ = 1413998784.

The previous prime is 2121553333. The next prime is 2121553361. The reversal of 2121553341 is 1433551212.

2121553341 is a `hidden beast` number, since 2 + 121 + 5 + 533 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 622702116 + 1498851225 = 24954^2 + 38715^2 .

It is not a de Polignac number, because 2121553341 - 2³ = 2121553333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121553321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8041 + ... + 65633.

It is an arithmetic number, because the mean of its divisors is an integer number (255438989).

Almost surely, 2^2121553341 is an apocalyptic number.

It is an amenable number.

2121553341 is a deficient number, since it is larger than the sum of its proper divisors (943714527).

2121553341 is a wasteful number, since it uses less digits than its factorization.

2121553341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61692 (or 61689 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2121553341 is about 46060.3228494981. The cubic root of 2121553341 is about 1284.9453344194.

It can be divided in two parts, 212155 and 3341, that added together give a triangular number (215496 = T₆₅₆).

The spelling of 2121553341 in words is "two billion, one hundred twenty-one million, five hundred fifty-three thousand, three hundred forty-one".