21887705201 has 8 divisors (see below), whose sum is σ = 22063696704. Its totient is φ = 21712248880.

The previous prime is 21887705197. The next prime is 21887705219. The reversal of 21887705201 is 10250778812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21887705201 - 2² = 21887705197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21887705221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51470 + ... + 215463.

It is an arithmetic number, because the mean of its divisors is an integer number (2757962088).

Almost surely, 2^21887705201 is an apocalyptic number.

It is an amenable number.

21887705201 is a deficient number, since it is larger than the sum of its proper divisors (175991503).

21887705201 is a wasteful number, since it uses less digits than its factorization.

21887705201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267591.

The product of its (nonzero) digits is 62720, while the sum is 41.

The spelling of 21887705201 in words is "twenty-one billion, eight hundred eighty-seven million, seven hundred five thousand, two hundred one".