2421220221242 has 4 divisors (see below), whose sum is σ = 3631830331866. Its totient is φ = 1210610110620.

The previous prime is 2421220221221. The next prime is 2421220221289.

2421220221242 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2119554545161 + 301665676081 = 1455869^2 + 549241^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605305055309 + ... + 605305055312.

Almost surely, 2^{2421220221242} is an apocalyptic number.

2421220221242 is a deficient number, since it is larger than the sum of its proper divisors (1210610110624).

2421220221242 is a wasteful number, since it uses less digits than its factorization.

2421220221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210610110623.

The product of its (nonzero) digits is 4096, while the sum is 26.

It can be divided in two parts, 2421220 and 221242, that added together give a palindrome (2642462).

The spelling of 2421220221242 in words is "two trillion, four hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred forty-two".