211020100 has 36 divisors (see below), whose sum is σ = 472691968. Its totient is φ = 81684000.

The previous prime is 211020091. The next prime is 211020107. The reversal of 211020100 is 1020112.

It is not an unprimeable number, because it can be changed into a prime (211020107) by changing a digit.

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, 30936 + ... + 37135.

Almost surely, 2^211020100 is an apocalyptic number.

211020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020100 is an abundant number, since it is smaller than the sum of its proper divisors (261671868).

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

211020100 is a wasteful number, since it uses less digits than its factorization.

211020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68116 (or 68109 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 211020100 is about 14526.5309003905. The cubic root of 211020100 is about 595.3530846900.

Adding to 211020100 its reverse (1020112), we get a palindrome (212040212).

The spelling of 211020100 in words is "two hundred eleven million, twenty thousand, one hundred".