210220111210100 has 36 divisors (see below), whose sum is σ = 468506766775404. Its totient is φ = 81815394631680.

The previous prime is 210220111210009. The next prime is 210220111210103. The reversal of 210220111210100 is 1012111022012.

It can be written as a sum of positive squares in 6 ways, for example, as 519244183396 + 209700867026704 = 720586^2 + 14481052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220111210103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28408119437 + ... + 28408126836.

Almost surely, 2^{210220111210100} is an apocalyptic number.

210220111210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210220111210100 is an abundant number, since it is smaller than the sum of its proper divisors (258286655565304).

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

210220111210100 is a wasteful number, since it uses less digits than its factorization.

210220111210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56816246324 (or 56816246317 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210220111210100 its reverse (1012111022012), we get a palindrome (211232222232112).

The spelling of 210220111210100 in words is "two hundred ten trillion, two hundred twenty billion, one hundred eleven million, two hundred ten thousand, one hundred".