21142102022004 has 12 divisors (see below), whose sum is σ = 49331571384704. Its totient is φ = 7047367340664.

The previous prime is 21142102022003. The next prime is 21142102022033. The reversal of 21142102022004 is 40022020124112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142102022003) 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, 880920917572 + ... + 880920917595.

Almost surely, 2^{21142102022004} is an apocalyptic number.

It is an amenable number.

21142102022004 is an abundant number, since it is smaller than the sum of its proper divisors (28189469362700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21142102022004 is a wasteful number, since it uses less digits than its factorization.

21142102022004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761841835174 (or 1761841835172 counting only the distinct ones).

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

Adding to 21142102022004 its reverse (40022020124112), we get a palindrome (61164122146116).

The spelling of 21142102022004 in words is "twenty-one trillion, one hundred forty-two billion, one hundred two million, twenty-two thousand, four".