21885331027 has 8 divisors (see below), whose sum is σ = 25543973376. Its totient is φ = 18359730312.

The previous prime is 21885331003. The next prime is 21885331031. The reversal of 21885331027 is 72013358812.

It is a happy number.

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

It is not a de Polignac number, because 21885331027 - 2¹⁹ = 21884806739 is a prime.

It is a super-2 number, since 2×21885331027² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21885331087) 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, 33260053 + ... + 33260710.

It is an arithmetic number, because the mean of its divisors is an integer number (3192996672).

Almost surely, 2^21885331027 is an apocalyptic number.

21885331027 is a deficient number, since it is larger than the sum of its proper divisors (3658642349).

21885331027 is an equidigital number, since it uses as much as digits as its factorization.

21885331027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66520817.

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 21885331027 its reverse (72013358812), we get a palindrome (93898689839).

The spelling of 21885331027 in words is "twenty-one billion, eight hundred eighty-five million, three hundred thirty-one thousand, twenty-seven".