21220210012000 has 48 divisors (see below), whose sum is σ = 52138056009312. Its totient is φ = 8488084003200.

The previous prime is 21220210011983. The next prime is 21220210012061. The reversal of 21220210012000 is 21001202212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2652522252 + ... + 2652530251.

It is an arithmetic number, because the mean of its divisors is an integer number (1086209500194).

Almost surely, 2^{21220210012000} is an apocalyptic number.

21220210012000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220210012000 is an abundant number, since it is smaller than the sum of its proper divisors (30917845997312).

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

21220210012000 is an equidigital number, since it uses as much as digits as its factorization.

21220210012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305052528 (or 5305052510 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21220210012000 its reverse (21001202212), we get a palindrome (21241211214212).

The spelling of 21220210012000 in words is "twenty-one trillion, two hundred twenty billion, two hundred ten million, twelve thousand".