211021022002100 has 36 divisors (see below), whose sum is σ = 457919581794444. Its totient is φ = 84407678100480.

The previous prime is 211021022002079. The next prime is 211021022002111. The reversal of 211021022002100 is 1200220120112.

It can be written as a sum of positive squares in 6 ways, for example, as 492413765284 + 210528608236816 = 701722^2 + 14509604^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2550074 + ... + 20701326.

It is an arithmetic number, because the mean of its divisors is an integer number (12719988383179).

Almost surely, 2^{211021022002100} is an apocalyptic number.

211021022002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211021022002100 is an abundant number, since it is smaller than the sum of its proper divisors (246898559792344).

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

211021022002100 is a wasteful number, since it uses less digits than its factorization.

211021022002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18267524 (or 18267517 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211021022002100 its reverse (1200220120112), we get a palindrome (212221242122212).

The spelling of 211021022002100 in words is "two hundred eleven trillion, twenty-one billion, twenty-two million, two thousand, one hundred".