1021110212211 has 16 divisors (see below), whose sum is σ = 1398875212800. Its totient is φ = 662058417888.

The previous prime is 1021110212189. The next prime is 1021110212257. The reversal of 1021110212211 is 1122120111201.

It is a happy number.

It is not a de Polignac number, because 1021110212211 - 2¹¹ = 1021110210163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021110212281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706851 + ... + 2226108.

It is an arithmetic number, because the mean of its divisors is an integer number (87429700800).

Almost surely, 2^{1021110212211} is an apocalyptic number.

1021110212211 is a deficient number, since it is larger than the sum of its proper divisors (377765000589).

1021110212211 is a wasteful number, since it uses less digits than its factorization.

1021110212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935338.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1021110212211 its reverse (1122120111201), we get a palindrome (2143230323412).

It can be divided in two parts, 1021110 and 212211, that added together give a palindrome (1233321).

The spelling of 1021110212211 in words is "one trillion, twenty-one billion, one hundred ten million, two hundred twelve thousand, two hundred eleven".