2211020100 has 216 divisors, whose sum is σ = 7231148288. Its totient is φ = 564537600.

The previous prime is 2211020029. The next prime is 2211020113. The reversal of 2211020100 is 10201122.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2230605 + ... + 2231595.

Almost surely, 2^2211020100 is an apocalyptic number.

2211020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3615574144).

2211020100 is an abundant number, since it is smaller than the sum of its proper divisors (5020128188).

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

2211020100 is a wasteful number, since it uses less digits than its factorization.

2211020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2211020100 is about 47021.4855146028. The cubic root of 2211020100 is about 1302.7594442429.

Adding to 2211020100 its reverse (10201122), we get a palindrome (2221221222).

The spelling of 2211020100 in words is "two billion, two hundred eleven million, twenty thousand, one hundred".