2400441221421 has 16 divisors (see below), whose sum is σ = 3710827009920. Its totient is φ = 1530716140800.

The previous prime is 2400441221411. The next prime is 2400441221489. The reversal of 2400441221421 is 1241221440042.

2400441221421 is a `hidden beast` number, since 2 + 4 + 0 + 0 + 441 + 2 + 214 + 2 + 1 = 666.

It is not a de Polignac number, because 2400441221421 - 2¹³ = 2400441213229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400441221411) 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, 1932721780 + ... + 1932723021.

It is an arithmetic number, because the mean of its divisors is an integer number (231926688120).

Almost surely, 2^{2400441221421} is an apocalyptic number.

It is an amenable number.

2400441221421 is a deficient number, since it is larger than the sum of its proper divisors (1310385788499).

2400441221421 is a wasteful number, since it uses less digits than its factorization.

2400441221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865444833 (or 3865444827 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 2400441221421 its reverse (1241221440042), we get a palindrome (3641662661463).

The spelling of 2400441221421 in words is "two trillion, four hundred billion, four hundred forty-one million, two hundred twenty-one thousand, four hundred twenty-one".