2121001441 has 16 divisors (see below), whose sum is σ = 2322028800. Its totient is φ = 1925645760.

The previous prime is 2121001439. The next prime is 2121001451. The reversal of 2121001441 is 1441001212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2121001441 - 2¹ = 2121001439 is a prime.

It is a super-2 number, since 2×2121001441² = 8997294225448152962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121001411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194196 + ... + 204826.

It is an arithmetic number, because the mean of its divisors is an integer number (145126800).

Almost surely, 2^2121001441 is an apocalyptic number.

It is an amenable number.

2121001441 is a deficient number, since it is larger than the sum of its proper divisors (201027359).

2121001441 is a wasteful number, since it uses less digits than its factorization.

2121001441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10896.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2121001441 is about 46054.3314032459. The cubic root of 2121001441 is about 1284.8339030421.

Adding to 2121001441 its reverse (1441001212), we get a palindrome (3562002653).

The spelling of 2121001441 in words is "two billion, one hundred twenty-one million, one thousand, four hundred forty-one".