21142030303121 has 8 divisors (see below), whose sum is σ = 26020960373184. Its totient is φ = 16727760239760.

The previous prime is 21142030303087. The next prime is 21142030303211. The reversal of 21142030303121 is 12130303024112.

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 21142030303121 - 2³⁴ = 21124850433937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21142030303621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116165001575 + ... + 116165001756.

It is an arithmetic number, because the mean of its divisors is an integer number (3252620046648).

Almost surely, 2^{21142030303121} is an apocalyptic number.

It is an amenable number.

21142030303121 is a deficient number, since it is larger than the sum of its proper divisors (4878930070063).

21142030303121 is a wasteful number, since it uses less digits than its factorization.

21142030303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232330003351.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21142030303121 its reverse (12130303024112), we get a palindrome (33272333327233).

The spelling of 21142030303121 in words is "twenty-one trillion, one hundred forty-two billion, thirty million, three hundred three thousand, one hundred twenty-one".