211102212021020 has 12 divisors (see below), whose sum is σ = 443314645244184. Its totient is φ = 84440884808400.

The previous prime is 211102212021007. The next prime is 211102212021037. The reversal of 211102212021020 is 20120212201112.

It is a self number, because there is not a number n which added to its sum of digits gives 211102212021020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5277555300506 + ... + 5277555300545.

It is an arithmetic number, because the mean of its divisors is an integer number (36942887103682).

Almost surely, 2^{211102212021020} is an apocalyptic number.

211102212021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211102212021020 is an abundant number, since it is smaller than the sum of its proper divisors (232212433223164).

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

211102212021020 is a wasteful number, since it uses less digits than its factorization.

211102212021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555110601060 (or 10555110601058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211102212021020 its reverse (20120212201112), we get a palindrome (231222424222132).

The spelling of 211102212021020 in words is "two hundred eleven trillion, one hundred two billion, two hundred twelve million, twenty-one thousand, twenty".