21012320141 has 8 divisors (see below), whose sum is σ = 21310944768. Its totient is φ = 20713770000.

The previous prime is 21012320117. The next prime is 21012320143. The reversal of 21012320141 is 14102321012.

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 21012320141 - 2³⁴ = 3832450957 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 (21012320143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807311 + ... + 832931.

It is an arithmetic number, because the mean of its divisors is an integer number (2663868096).

Almost surely, 2^21012320141 is an apocalyptic number.

It is an amenable number.

21012320141 is a deficient number, since it is larger than the sum of its proper divisors (298624627).

21012320141 is a wasteful number, since it uses less digits than its factorization.

21012320141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37243.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21012320141 its reverse (14102321012), we get a palindrome (35114641153).

The spelling of 21012320141 in words is "twenty-one billion, twelve million, three hundred twenty thousand, one hundred forty-one".