210120012110020 has 24 divisors (see below), whose sum is σ = 441252658332864. Its totient is φ = 84047884291296.

The previous prime is 210120012110009. The next prime is 210120012110023. The reversal of 210120012110020 is 20011210021012.

It is a super-2 number, since 2×210120012110020² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210120012110023) 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, 7488409 + ... + 21824671.

It is an arithmetic number, because the mean of its divisors is an integer number (18385527430536).

Almost surely, 2^{210120012110020} is an apocalyptic number.

210120012110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120012110020 is an abundant number, since it is smaller than the sum of its proper divisors (231132646222844).

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

210120012110020 is a wasteful number, since it uses less digits than its factorization.

210120012110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15069099 (or 15069097 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210120012110020 its reverse (20011210021012), we get a palindrome (230131222131032).

The spelling of 210120012110020 in words is "two hundred ten trillion, one hundred twenty billion, twelve million, one hundred ten thousand, twenty".