21102233030220 has 48 divisors (see below), whose sum is σ = 59219630104320. Its totient is φ = 5614559510976.

The previous prime is 21102233030209. The next prime is 21102233030233. The reversal of 21102233030220 is 2203033220112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396930400 + ... + 396983559.

It is an arithmetic number, because the mean of its divisors is an integer number (1233742293840).

Almost surely, 2^{21102233030220} is an apocalyptic number.

21102233030220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102233030220 is an abundant number, since it is smaller than the sum of its proper divisors (38117397074100).

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

21102233030220 is a wasteful number, since it uses less digits than its factorization.

21102233030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793914414 (or 793914412 counting only the distinct ones).

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

Adding to 21102233030220 its reverse (2203033220112), we get a palindrome (23305266250332).

The spelling of 21102233030220 in words is "twenty-one trillion, one hundred two billion, two hundred thirty-three million, thirty thousand, two hundred twenty".