21202446220230 has 32 divisors (see below), whose sum is σ = 55511859195648. Its totient is φ = 5139986962400.

The previous prime is 21202446220183. The next prime is 21202446220231. The reversal of 21202446220230 is 3202264420212.

It is a super-3 number, since 3×21202446220230³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202446220231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32124918186 + ... + 32124918845.

It is an arithmetic number, because the mean of its divisors is an integer number (1734745599864).

Almost surely, 2^{21202446220230} is an apocalyptic number.

21202446220230 is an abundant number, since it is smaller than the sum of its proper divisors (34309412975418).

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

21202446220230 is a wasteful number, since it uses less digits than its factorization.

21202446220230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64249837052.

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 21202446220230 in words is "twenty-one trillion, two hundred two billion, four hundred forty-six million, two hundred twenty thousand, two hundred thirty".