21100141442 has 64 divisors (see below), whose sum is σ = 34062336000. Its totient is φ = 9781611840.

The previous prime is 21100141429. The next prime is 21100141457. The reversal of 21100141442 is 24414100112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60458684 + ... + 60459032.

It is an arithmetic number, because the mean of its divisors is an integer number (532224000).

Almost surely, 2^21100141442 is an apocalyptic number.

21100141442 is a deficient number, since it is larger than the sum of its proper divisors (12962194558).

21100141442 is a wasteful number, since it uses less digits than its factorization.

21100141442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21100141442 its reverse (24414100112), we get a palindrome (45514241554).

The spelling of 21100141442 in words is "twenty-one billion, one hundred million, one hundred forty-one thousand, four hundred forty-two".