2124221401 has 4 divisors (see below), whose sum is σ = 2192744704. Its totient is φ = 2055698100.

The previous prime is 2124221389. The next prime is 2124221423. The reversal of 2124221401 is 1041224212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2124221401 - 2⁷ = 2124221273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34261605 + ... + 34261666.

It is an arithmetic number, because the mean of its divisors is an integer number (548186176).

Almost surely, 2^2124221401 is an apocalyptic number.

It is an amenable number.

2124221401 is a deficient number, since it is larger than the sum of its proper divisors (68523303).

2124221401 is an equidigital number, since it uses as much as digits as its factorization.

2124221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68523302.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2124221401 is about 46089.2764208769. The cubic root of 2124221401 is about 1285.4837567538.

Adding to 2124221401 its reverse (1041224212), we get a palindrome (3165445613).

The spelling of 2124221401 in words is "two billion, one hundred twenty-four million, two hundred twenty-one thousand, four hundred one".