21102010134 has 32 divisors (see below), whose sum is σ = 43389603936. Its totient is φ = 6837646080.

The previous prime is 21102010117. The next prime is 21102010141. The reversal of 21102010134 is 43101020112.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 86697 + ... + 222980.

It is an arithmetic number, because the mean of its divisors is an integer number (1355925123).

Almost surely, 2^21102010134 is an apocalyptic number.

21102010134 is an abundant number, since it is smaller than the sum of its proper divisors (22287593802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102010134 is a wasteful number, since it uses less digits than its factorization.

21102010134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310000.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21102010134 its reverse (43101020112), we get a palindrome (64203030246).

The spelling of 21102010134 in words is "twenty-one billion, one hundred two million, ten thousand, one hundred thirty-four".