2141401521 has 32 divisors (see below), whose sum is σ = 3289190400. Its totient is φ = 1213914240.

The previous prime is 2141401513. The next prime is 2141401541. The reversal of 2141401521 is 1251041412.

It is not a de Polignac number, because 2141401521 - 2³ = 2141401513 is a prime.

It is a super-2 number, since 2×2141401521² = 9171200948282226882, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2141401541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1660645 + ... + 1661933.

It is an arithmetic number, because the mean of its divisors is an integer number (102787200).

Almost surely, 2^2141401521 is an apocalyptic number.

2141401521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2141401521 is a deficient number, since it is larger than the sum of its proper divisors (1147788879).

2141401521 is a wasteful number, since it uses less digits than its factorization.

2141401521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

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

The square root of 2141401521 is about 46275.2798046646. The cubic root of 2141401521 is about 1288.9400023794.

Adding to 2141401521 its reverse (1251041412), we get a palindrome (3392442933).

The spelling of 2141401521 in words is "two billion, one hundred forty-one million, four hundred one thousand, five hundred twenty-one".