20242112421 has 16 divisors (see below), whose sum is σ = 27568447488. Its totient is φ = 13205358000.

The previous prime is 20242112393. The next prime is 20242112431. The reversal of 20242112421 is 12421124202.

It is not a de Polignac number, because 20242112421 - 2¹¹ = 20242110373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242112431) 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, 1339176 + ... + 1354206.

It is an arithmetic number, because the mean of its divisors is an integer number (1723027968).

Almost surely, 2^20242112421 is an apocalyptic number.

It is an amenable number.

20242112421 is a deficient number, since it is larger than the sum of its proper divisors (7326335067).

20242112421 is a wasteful number, since it uses less digits than its factorization.

20242112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24632.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20242112421 its reverse (12421124202), we get a palindrome (32663236623).

The spelling of 20242112421 in words is "twenty billion, two hundred forty-two million, one hundred twelve thousand, four hundred twenty-one".