421032130000021 has 8 divisors (see below), whose sum is σ = 426590016941088. Its totient is φ = 415509756714000.

The previous prime is 421032129999979. The next prime is 421032130000073. The reversal of 421032130000021 is 120000031230124.

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 421032130000021 - 2¹³ = 421032129991829 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 (421032130000091) 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, 8878389895 + ... + 8878437316.

It is an arithmetic number, because the mean of its divisors is an integer number (53323752117636).

Almost surely, 2^{421032130000021} is an apocalyptic number.

It is an amenable number.

421032130000021 is a deficient number, since it is larger than the sum of its proper divisors (5557886941067).

421032130000021 is a wasteful number, since it uses less digits than its factorization.

421032130000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17756827523.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 421032130000021 its reverse (120000031230124), we get a palindrome (541032161230145).

The spelling of 421032130000021 in words is "four hundred twenty-one trillion, thirty-two billion, one hundred thirty million, twenty-one", and thus it is an aban number.