21011221022088 has 96 divisors (see below), whose sum is σ = 57741242035680. Its totient is φ = 6366618086400.

The previous prime is 21011221022087. The next prime is 21011221022089. The reversal of 21011221022088 is 88022012211012.

It is an interprime number because it is at equal distance from previous prime (21011221022087) and next prime (21011221022089).

It is not an unprimeable number, because it can be changed into a prime (21011221022087) 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 23 ways as a sum of consecutive naturals, for example, 45452856 + ... + 45912792.

It is an arithmetic number, because the mean of its divisors is an integer number (601471271205).

Almost surely, 2^{21011221022088} is an apocalyptic number.

It is an amenable number.

21011221022088 is an abundant number, since it is smaller than the sum of its proper divisors (36730021013592).

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

21011221022088 is a wasteful number, since it uses less digits than its factorization.

21011221022088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475699 (or 475684 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The spelling of 21011221022088 in words is "twenty-one trillion, eleven billion, two hundred twenty-one million, twenty-two thousand, eighty-eight".