211020022100 has 36 divisors (see below), whose sum is σ = 457935044448. Its totient is φ = 84404028000.

The previous prime is 211020022061. The next prime is 211020022121. The reversal of 211020022100 is 1220020112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3028655 + ... + 3097545.

Almost surely, 2^211020022100 is an apocalyptic number.

211020022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020022100 is an abundant number, since it is smaller than the sum of its proper divisors (246915022348).

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

211020022100 is a wasteful number, since it uses less digits than its factorization.

211020022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99536 (or 99529 counting only the distinct ones).

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

Adding to 211020022100 its reverse (1220020112), we get a palindrome (212240042212).

The spelling of 211020022100 in words is "two hundred eleven billion, twenty million, twenty-two thousand, one hundred".