21120022110000 has 200 divisors, whose sum is σ = 74376271024704. Its totient is φ = 5120005280000.

The previous prime is 21120022109983. The next prime is 21120022110053. The reversal of 21120022110000 is 1122002112.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31670034 + ... + 32330033.

Almost surely, 2^{21120022110000} is an apocalyptic number.

21120022110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120022110000 is an abundant number, since it is smaller than the sum of its proper divisors (53256248914704).

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

21120022110000 is a wasteful number, since it uses less digits than its factorization.

21120022110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64000109 (or 64000088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120022110000 its reverse (1122002112), we get a palindrome (21121144112112).

The spelling of 21120022110000 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, one hundred ten thousand".