21030222220200 has 144 divisors (see below), whose sum is σ = 72129187990080. Its totient is φ = 5488738826880.

The previous prime is 21030222220199. The next prime is 21030222220223. The reversal of 21030222220200 is 202222203012.

21030222220200 is a `hidden beast` number, since 21 + 0 + 3 + 0 + 222 + 220 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 124207494 + ... + 124376693.

It is an arithmetic number, because the mean of its divisors is an integer number (500897138820).

Almost surely, 2^{21030222220200} is an apocalyptic number.

21030222220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030222220200 is an abundant number, since it is smaller than the sum of its proper divisors (51098965769880).

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

21030222220200 is a wasteful number, since it uses less digits than its factorization.

21030222220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248584256 (or 248584244 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21030222220200 its reverse (202222203012), we get a palindrome (21232444423212).

The spelling of 21030222220200 in words is "twenty-one trillion, thirty billion, two hundred twenty-two million, two hundred twenty thousand, two hundred".