211010021100 has 108 divisors (see below), whose sum is σ = 671271009864. Its totient is φ = 55429482240.

The previous prime is 211010021093. The next prime is 211010021119. The reversal of 211010021100 is 1120010112.

It is a happy number.

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 35 ways as a sum of consecutive naturals, for example, 1689369 + ... + 1809968.

Almost surely, 2^211010021100 is an apocalyptic number.

211010021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211010021100 is an abundant number, since it is smaller than the sum of its proper divisors (460260988764).

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

211010021100 is a wasteful number, since it uses less digits than its factorization.

211010021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499424 (or 3499414 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 211010021100 its reverse (1120010112), we get a palindrome (212130031212).

The spelling of 211010021100 in words is "two hundred eleven billion, ten million, twenty-one thousand, one hundred".