21001422132141 has 32 divisors (see below), whose sum is σ = 31329015459840. Its totient is φ = 12403235644800.

The previous prime is 21001422132137. The next prime is 21001422132167. The reversal of 21001422132141 is 14123122410012.

It is not a de Polignac number, because 21001422132141 - 2² = 21001422132137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001422132191) 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 31 ways as a sum of consecutive naturals, for example, 7872765 + ... + 10197218.

It is an arithmetic number, because the mean of its divisors is an integer number (979031733120).

Almost surely, 2^{21001422132141} is an apocalyptic number.

It is an amenable number.

21001422132141 is a deficient number, since it is larger than the sum of its proper divisors (10327593327699).

21001422132141 is a wasteful number, since it uses less digits than its factorization.

21001422132141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18070897.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21001422132141 its reverse (14123122410012), we get a palindrome (35124544542153).

The spelling of 21001422132141 in words is "twenty-one trillion, one billion, four hundred twenty-two million, one hundred thirty-two thousand, one hundred forty-one".