210101120220 has 24 divisors (see below), whose sum is σ = 588283136784. Its totient is φ = 56026965376.

The previous prime is 210101120219. The next prime is 210101120227. The reversal of 210101120220 is 22021101012.

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

It is a junction number, because it is equal to n+sod(n) for n = 210101120196 and 210101120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101120227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1750842609 + ... + 1750842728.

It is an arithmetic number, because the mean of its divisors is an integer number (24511797366).

Almost surely, 2^210101120220 is an apocalyptic number.

210101120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101120220 is an abundant number, since it is smaller than the sum of its proper divisors (378182016564).

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

210101120220 is a wasteful number, since it uses less digits than its factorization.

210101120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501685349 (or 3501685347 counting only the distinct ones).

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

Adding to 210101120220 its reverse (22021101012), we get a palindrome (232122221232).

The spelling of 210101120220 in words is "two hundred ten billion, one hundred one million, one hundred twenty thousand, two hundred twenty".