21012033310 has 16 divisors (see below), whose sum is σ = 39812274000. Its totient is φ = 7962454656.

The previous prime is 21012033307. The next prime is 21012033311. The reversal of 21012033310 is 1333021012.

It is a super-2 number, since 2×21012033310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012033311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55294635 + ... + 55295014.

It is an arithmetic number, because the mean of its divisors is an integer number (2488267125).

Almost surely, 2^21012033310 is an apocalyptic number.

21012033310 is a deficient number, since it is larger than the sum of its proper divisors (18800240690).

21012033310 is a wasteful number, since it uses less digits than its factorization.

21012033310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110589675.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21012033310 its reverse (1333021012), we get a palindrome (22345054322).

The spelling of 21012033310 in words is "twenty-one billion, twelve million, thirty-three thousand, three hundred ten".