21111600132 has 96 divisors (see below), whose sum is σ = 62724157440. Its totient is φ = 6015371040.

The previous prime is 21111600121. The next prime is 21111600163. The reversal of 21111600132 is 23100611112.

21111600132 is a `hidden beast` number, since 21 + 1 + 11 + 600 + 1 + 32 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239407 + ... + 315497.

It is an arithmetic number, because the mean of its divisors is an integer number (653376640).

Almost surely, 2^21111600132 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 21111600132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31362078720).

21111600132 is an abundant number, since it is smaller than the sum of its proper divisors (41612557308).

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

21111600132 is a wasteful number, since it uses less digits than its factorization.

21111600132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76478 (or 76470 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 21111600132 in words is "twenty-one billion, one hundred eleven million, six hundred thousand, one hundred thirty-two".