21003110134 has 16 divisors (see below), whose sum is σ = 31605287616. Its totient is φ = 10468057600.

The previous prime is 21003110129. The next prime is 21003110159. The reversal of 21003110134 is 43101130012.

It is a super-2 number, since 2×21003110134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039044 + ... + 1059064.

It is an arithmetic number, because the mean of its divisors is an integer number (1975330476).

Almost surely, 2^21003110134 is an apocalyptic number.

21003110134 is a deficient number, since it is larger than the sum of its proper divisors (10602177482).

21003110134 is a wasteful number, since it uses less digits than its factorization.

21003110134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21671.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21003110134 its reverse (43101130012), we get a palindrome (64104240146).

The spelling of 21003110134 in words is "twenty-one billion, three million, one hundred ten thousand, one hundred thirty-four".