21010033234 has 16 divisors (see below), whose sum is σ = 31694777856. Its totient is φ = 10445158800.

The previous prime is 21010033159. The next prime is 21010033301. The reversal of 21010033234 is 43233001012.

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, 894124 + ... + 917320.

It is an arithmetic number, because the mean of its divisors is an integer number (1980923616).

Almost surely, 2^21010033234 is an apocalyptic number.

21010033234 is a deficient number, since it is larger than the sum of its proper divisors (10684744622).

21010033234 is a wasteful number, since it uses less digits than its factorization.

21010033234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25761.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21010033234 its reverse (43233001012), we get a palindrome (64243034246).

The spelling of 21010033234 in words is "twenty-one billion, ten million, thirty-three thousand, two hundred thirty-four".