21433200102 has 128 divisors (see below), whose sum is σ = 50086080000. Its totient is φ = 6787670400.

The previous prime is 21433200083. The next prime is 21433200119. The reversal of 21433200102 is 20100233412.

21433200102 is a `hidden beast` number, since 21 + 433 + 200 + 10 + 2 = 666.

It is a super-2 number, since 2×21433200102² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13836024 + ... + 13837572.

It is an arithmetic number, because the mean of its divisors is an integer number (391297500).

Almost surely, 2^21433200102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21433200102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25043040000).

21433200102 is an abundant number, since it is smaller than the sum of its proper divisors (28652879898).

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

21433200102 is a wasteful number, since it uses less digits than its factorization.

21433200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21433200102 its reverse (20100233412), we get a palindrome (41533433514).

The spelling of 21433200102 in words is "twenty-one billion, four hundred thirty-three million, two hundred thousand, one hundred two".