21112422001 has 16 divisors (see below), whose sum is σ = 23788118016. Its totient is φ = 18563490000.

The previous prime is 21112421989. The next prime is 21112422049. The reversal of 21112422001 is 10022421112.

It is not a de Polignac number, because 21112422001 - 2⁵ = 21112421969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112422101) 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, 621466 + ... + 654556.

It is an arithmetic number, because the mean of its divisors is an integer number (1486757376).

Almost surely, 2^21112422001 is an apocalyptic number.

It is an amenable number.

21112422001 is a deficient number, since it is larger than the sum of its proper divisors (2675696015).

21112422001 is a wasteful number, since it uses less digits than its factorization.

21112422001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35004.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21112422001 its reverse (10022421112), we get a palindrome (31134843113).

The spelling of 21112422001 in words is "twenty-one billion, one hundred twelve million, four hundred twenty-two thousand, one".