2141021505 has 16 divisors (see below), whose sum is σ = 3915010944. Its totient is φ = 978752640.

The previous prime is 2141021489. The next prime is 2141021521. The reversal of 2141021505 is 5051201412.

It is an interprime number because it is at equal distance from previous prime (2141021489) and next prime (2141021521).

It is not a de Polignac number, because 2141021505 - 2⁴ = 2141021489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10195236 + ... + 10195445.

It is an arithmetic number, because the mean of its divisors is an integer number (244688184).

Almost surely, 2^2141021505 is an apocalyptic number.

It is an amenable number.

2141021505 is a deficient number, since it is larger than the sum of its proper divisors (1773989439).

2141021505 is a wasteful number, since it uses less digits than its factorization.

2141021505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20390696.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2141021505 is about 46271.1735857218. The cubic root of 2141021505 is about 1288.8637521920.

Adding to 2141021505 its reverse (5051201412), we get a palindrome (7192222917).

The spelling of 2141021505 in words is "two billion, one hundred forty-one million, twenty-one thousand, five hundred five".