211110012220020 has 96 divisors (see below), whose sum is σ = 603744353243136. Its totient is φ = 55092780624000.

The previous prime is 211110012219943. The next prime is 211110012220043. The reversal of 211110012220020 is 20022210011112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24938415 + ... + 32313225.

It is an arithmetic number, because the mean of its divisors is an integer number (6289003679616).

Almost surely, 2^{211110012220020} is an apocalyptic number.

211110012220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211110012220020 is an abundant number, since it is smaller than the sum of its proper divisors (392634341023116).

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

211110012220020 is a wasteful number, since it uses less digits than its factorization.

211110012220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7385021 (or 7385019 counting only the distinct ones).

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

Adding to 211110012220020 its reverse (20022210011112), we get a palindrome (231132222231132).

The spelling of 211110012220020 in words is "two hundred eleven trillion, one hundred ten billion, twelve million, two hundred twenty thousand, twenty".