21142114021 has 8 divisors (see below), whose sum is σ = 24283836800. Its totient is φ = 18030746448.

The previous prime is 21142114003. The next prime is 21142114031. The reversal of 21142114021 is 12041124112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21142114021 - 2⁵ = 21142113989 is a prime.

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 21142114021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142114001) 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, 7587306 + ... + 7590091.

It is an arithmetic number, because the mean of its divisors is an integer number (3035479600).

Almost surely, 2^21142114021 is an apocalyptic number.

It is an amenable number.

21142114021 is a deficient number, since it is larger than the sum of its proper divisors (3141722779).

21142114021 is a wasteful number, since it uses less digits than its factorization.

21142114021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15177603.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21142114021 its reverse (12041124112), we get a palindrome (33183238133).

The spelling of 21142114021 in words is "twenty-one billion, one hundred forty-two million, one hundred fourteen thousand, twenty-one".