21002133110 has 32 divisors (see below), whose sum is σ = 43293173760. Its totient is φ = 7185933792.

The previous prime is 21002133101. The next prime is 21002133121. The reversal of 21002133110 is 1133120012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273950 + ... + 342129.

It is an arithmetic number, because the mean of its divisors is an integer number (1352911680).

Almost surely, 2^21002133110 is an apocalyptic number.

21002133110 is an abundant number, since it is smaller than the sum of its proper divisors (22291040650).

21002133110 is a wasteful number, since it uses less digits than its factorization.

21002133110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616580.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21002133110 its reverse (1133120012), we get a palindrome (22135253122).

The spelling of 21002133110 in words is "twenty-one billion, two million, one hundred thirty-three thousand, one hundred ten".