21142224404111 has 8 divisors (see below), whose sum is σ = 21249278736000. Its totient is φ = 21035178192600.

The previous prime is 21142224404051. The next prime is 21142224404129. The reversal of 21142224404111 is 11140442224112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21142224404111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142224404611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3224636 + ... + 7258286.

It is an arithmetic number, because the mean of its divisors is an integer number (2656159842000).

Almost surely, 2^{21142224404111} is an apocalyptic number.

21142224404111 is a deficient number, since it is larger than the sum of its proper divisors (107054331889).

21142224404111 is a wasteful number, since it uses less digits than its factorization.

21142224404111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060189.

The product of its (nonzero) digits is 4096, while the sum is 29.

Adding to 21142224404111 its reverse (11140442224112), we get a palindrome (32282666628223).

The spelling of 21142224404111 in words is "twenty-one trillion, one hundred forty-two billion, two hundred twenty-four million, four hundred four thousand, one hundred eleven".