21120202200111 has 8 divisors (see below), whose sum is σ = 32183165257344. Its totient is φ = 12068686971480.

The previous prime is 21120202200107. The next prime is 21120202200121. The reversal of 21120202200111 is 11100220202112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21120202200111 - 2² = 21120202200107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120202200121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 502861957125 + ... + 502861957166.

It is an arithmetic number, because the mean of its divisors is an integer number (4022895657168).

Almost surely, 2^{21120202200111} is an apocalyptic number.

21120202200111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21120202200111 is a deficient number, since it is larger than the sum of its proper divisors (11062963057233).

21120202200111 is a wasteful number, since it uses less digits than its factorization.

21120202200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005723914301.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21120202200111 its reverse (11100220202112), we get a palindrome (32220422402223).

The spelling of 21120202200111 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, two hundred thousand, one hundred eleven".