21111110222200 has 48 divisors (see below), whose sum is σ = 49084734224160. Its totient is φ = 8444202720000.

The previous prime is 21111110222149. The next prime is 21111110222243. The reversal of 21111110222200 is 222201111112.

It is a super-3 number, since 3×21111110222200³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5589345 + ... + 8571055.

It is an arithmetic number, because the mean of its divisors is an integer number (1022598629670).

Almost surely, 2^{21111110222200} is an apocalyptic number.

21111110222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21111110222200 is an abundant number, since it is smaller than the sum of its proper divisors (27973624001960).

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

21111110222200 is a wasteful number, since it uses less digits than its factorization.

21111110222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017128 (or 3017119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21111110222200 its reverse (222201111112), we get a palindrome (21333311333312).

The spelling of 21111110222200 in words is "twenty-one trillion, one hundred eleven billion, one hundred ten million, two hundred twenty-two thousand, two hundred".