21030220301232 has 20 divisors (see below), whose sum is σ = 54328069111640. Its totient is φ = 7010073433728.

The previous prime is 21030220301213. The next prime is 21030220301291. The reversal of 21030220301232 is 23210302203012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21030220301199 and 21030220301208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219064794757 + ... + 219064794852.

It is an arithmetic number, because the mean of its divisors is an integer number (2716403455582).

Almost surely, 2^{21030220301232} is an apocalyptic number.

It is an amenable number.

21030220301232 is an abundant number, since it is smaller than the sum of its proper divisors (33297848810408).

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

21030220301232 is a wasteful number, since it uses less digits than its factorization.

21030220301232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438129589620 (or 438129589614 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21030220301232 its reverse (23210302203012), we get a palindrome (44240522504244).

The spelling of 21030220301232 in words is "twenty-one trillion, thirty billion, two hundred twenty million, three hundred one thousand, two hundred thirty-two".