211020222100 has 18 divisors (see below), whose sum is σ = 457913882174. Its totient is φ = 84408088800.

The previous prime is 211020222067. The next prime is 211020222143. The reversal of 211020222100 is 1222020112.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 41576025604 + 169444196496 = 203902^2 + 411636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1055101011 + ... + 1055101210.

Almost surely, 2^211020222100 is an apocalyptic number.

211020222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020222100 is an abundant number, since it is smaller than the sum of its proper divisors (246893660074).

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

211020222100 is a wasteful number, since it uses less digits than its factorization.

211020222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110202235 (or 2110202228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211020222100 its reverse (1222020112), we get a palindrome (212242242212).

The spelling of 211020222100 in words is "two hundred eleven billion, twenty million, two hundred twenty-two thousand, one hundred".