210111010020 has 96 divisors (see below), whose sum is σ = 653805008640. Its totient is φ = 56018776320.

The previous prime is 210111010013. The next prime is 210111010051. The reversal of 210111010020 is 20010111012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 210111009984 and 210111010011.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2984344 + ... + 3053936.

It is an arithmetic number, because the mean of its divisors is an integer number (6810468840).

Almost surely, 2^210111010020 is an apocalyptic number.

210111010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210111010020 is an abundant number, since it is smaller than the sum of its proper divisors (443693998620).

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

210111010020 is a wasteful number, since it uses less digits than its factorization.

210111010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75202 (or 75194 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210111010020 its reverse (20010111012), we get a palindrome (230121121032).

The spelling of 210111010020 in words is "two hundred ten billion, one hundred eleven million, ten thousand, twenty".