2121541373 has 8 divisors (see below), whose sum is σ = 2426960640. Its totient is φ = 1816707600.

The previous prime is 2121541369. The next prime is 2121541391. The reversal of 2121541373 is 3731451212.

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 2121541373 - 2² = 2121541369 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 (2121541343) 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, 138578 + ... + 153123.

It is an arithmetic number, because the mean of its divisors is an integer number (303370080).

Almost surely, 2^2121541373 is an apocalyptic number.

It is an amenable number.

2121541373 is a deficient number, since it is larger than the sum of its proper divisors (305419267).

2121541373 is a wasteful number, since it uses less digits than its factorization.

2121541373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292747.

The product of its digits is 5040, while the sum is 29.

The square root of 2121541373 is about 46060.1929327266. The cubic root of 2121541373 is about 1284.9429182252.

Adding to 2121541373 its reverse (3731451212), we get a palindrome (5852992585).

The spelling of 2121541373 in words is "two billion, one hundred twenty-one million, five hundred forty-one thousand, three hundred seventy-three".