2141121405 has 32 divisors (see below), whose sum is σ = 3578019840. Its totient is φ = 1091280960.

The previous prime is 2141121391. The next prime is 2141121427. The reversal of 2141121405 is 5041211412.

It is not a de Polignac number, because 2141121405 - 2¹⁷ = 2140990333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505386 + ... + 509604.

It is an arithmetic number, because the mean of its divisors is an integer number (111813120).

Almost surely, 2^2141121405 is an apocalyptic number.

It is an amenable number.

2141121405 is a deficient number, since it is larger than the sum of its proper divisors (1436898435).

2141121405 is a wasteful number, since it uses less digits than its factorization.

2141121405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2141121405 is about 46272.2530789241. The cubic root of 2141121405 is about 1288.8837979951.

Adding to 2141121405 its reverse (5041211412), we get a palindrome (7182332817).

The spelling of 2141121405 in words is "two billion, one hundred forty-one million, one hundred twenty-one thousand, four hundred five".