21021103300032 has 84 divisors (see below), whose sum is σ = 65730760528056. Its totient is φ = 6370031301120.

The previous prime is 21021103299991. The next prime is 21021103300037. The reversal of 21021103300032 is 23000330112012.

21021103300032 is a `hidden beast` number, since 210 + 21 + 103 + 300 + 0 + 32 = 666.

It is a super-2 number, since 2×21021103300032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21021103299978 and 21021103300014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021103300037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1658855983 + ... + 1658868654.

Almost surely, 2^{21021103300032} is an apocalyptic number.

21021103300032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21021103300032 is an abundant number, since it is smaller than the sum of its proper divisors (44709657228024).

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

21021103300032 is a wasteful number, since it uses less digits than its factorization.

21021103300032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317724666 (or 3317724653 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21021103300032 its reverse (23000330112012), we get a palindrome (44021433412044).

The spelling of 21021103300032 in words is "twenty-one trillion, twenty-one billion, one hundred three million, three hundred thousand, thirty-two".