210220100120 has 16 divisors (see below), whose sum is σ = 472995225360. Its totient is φ = 84088040032.

The previous prime is 210220100087. The next prime is 210220100137. The reversal of 210220100120 is 21001022012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2627751212 + ... + 2627751291.

It is an arithmetic number, because the mean of its divisors is an integer number (29562201585).

Almost surely, 2^210220100120 is an apocalyptic number.

210220100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210220100120 is an abundant number, since it is smaller than the sum of its proper divisors (262775125240).

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

210220100120 is a wasteful number, since it uses less digits than its factorization.

210220100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255502514 (or 5255502510 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 210220100120 its reverse (21001022012), we get a palindrome (231221122132).

The spelling of 210220100120 in words is "two hundred ten billion, two hundred twenty million, one hundred thousand, one hundred twenty".