21133023101000 has 64 divisors (see below), whose sum is σ = 49531423434480. Its totient is φ = 8439508492800.

The previous prime is 21133023100979. The next prime is 21133023101009. The reversal of 21133023101000 is 10132033112.

It can be written as a sum of positive squares in 8 ways, for example, as 59763625156 + 21073259475844 = 244466^2 + 4590562^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21133023101000.

It is not an unprimeable number, because it can be changed into a prime (21133023101009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16508627 + ... + 17742626.

Almost surely, 2^{21133023101000} is an apocalyptic number.

21133023101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21133023101000 is an abundant number, since it is smaller than the sum of its proper divisors (28398400333480).

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

21133023101000 is a wasteful number, since it uses less digits than its factorization.

21133023101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34251891 (or 34251877 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21133023101000 its reverse (10132033112), we get a palindrome (21143155134112).

The spelling of 21133023101000 in words is "twenty-one trillion, one hundred thirty-three billion, twenty-three million, one hundred one thousand".