4021212422431 has 4 divisors (see below), whose sum is σ = 4032413571600. Its totient is φ = 4010011273264.

The previous prime is 4021212422429. The next prime is 4021212422471. The reversal of 4021212422431 is 1342242121204.

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

It is a cyclic number.

It is not a de Polignac number, because 4021212422431 - 2¹ = 4021212422429 is a prime.

It is a super-2 number, since 2×4021212422431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4021212422431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021212422471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600574046 + ... + 5600574763.

It is an arithmetic number, because the mean of its divisors is an integer number (1008103392900).

Almost surely, 2^{4021212422431} is an apocalyptic number.

4021212422431 is a deficient number, since it is larger than the sum of its proper divisors (11201149169).

4021212422431 is a wasteful number, since it uses less digits than its factorization.

4021212422431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201149168.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 4021212422431 its reverse (1342242121204), we get a palindrome (5363454543635).

The spelling of 4021212422431 in words is "four trillion, twenty-one billion, two hundred twelve million, four hundred twenty-two thousand, four hundred thirty-one".