21001042114 has 64 divisors (see below), whose sum is σ = 37010131200. Its totient is φ = 8849578752.

The previous prime is 21001042037. The next prime is 21001042141. The reversal of 21001042114 is 41124010012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10643232 + ... + 10645204.

It is an arithmetic number, because the mean of its divisors is an integer number (578283300).

Almost surely, 2^21001042114 is an apocalyptic number.

21001042114 is a deficient number, since it is larger than the sum of its proper divisors (16009089086).

21001042114 is a wasteful number, since it uses less digits than its factorization.

21001042114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21001042114 its reverse (41124010012), we get a palindrome (62125052126).

The spelling of 21001042114 in words is "twenty-one billion, one million, forty-two thousand, one hundred fourteen".