211000102100 has 18 divisors (see below), whose sum is σ = 457870221774. Its totient is φ = 84400040800.

The previous prime is 211000102069. The next prime is 211000102123. The reversal of 211000102100 is 1201000112.

It can be written as a sum of positive squares in 3 ways, for example, as 63901772944 + 147098329156 = 252788^2 + 383534^2 .

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, 1055000411 + ... + 1055000610.

It is an arithmetic number, because the mean of its divisors is an integer number (25437234543).

Almost surely, 2^211000102100 is an apocalyptic number.

211000102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000102100 is an abundant number, since it is smaller than the sum of its proper divisors (246870119674).

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

211000102100 is a wasteful number, since it uses less digits than its factorization.

211000102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110001035 (or 2110001028 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 211000102100 its reverse (1201000112), we get a palindrome (212201102212).

The spelling of 211000102100 in words is "two hundred eleven billion, one hundred two thousand, one hundred".