21241651032 has 128 divisors (see below), whose sum is σ = 67487040000. Its totient is φ = 6064253568.

The previous prime is 21241651031. The next prime is 21241651087. The reversal of 21241651032 is 23015614212.

21241651032 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 1 + 651 + 0 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21241650987 and 21241651005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241651031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2201194 + ... + 2210822.

It is an arithmetic number, because the mean of its divisors is an integer number (527242500).

Almost surely, 2^21241651032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21241651032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33743520000).

21241651032 is an abundant number, since it is smaller than the sum of its proper divisors (46245388968).

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

21241651032 is a wasteful number, since it uses less digits than its factorization.

21241651032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110 (or 11100 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 21241651032 in words is "twenty-one billion, two hundred forty-one million, six hundred fifty-one thousand, thirty-two".