2021211012211 has 4 divisors (see below), whose sum is σ = 2021213895624. Its totient is φ = 2021208128800.

The previous prime is 2021211012209. The next prime is 2021211012217. The reversal of 2021211012211 is 1122101121202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2021211012211 - 2¹ = 2021211012209 is a prime.

It is a super-2 number, since 2×2021211012211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021211012217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361776 + ... + 2042866.

It is an arithmetic number, because the mean of its divisors is an integer number (505303473906).

Almost surely, 2^{2021211012211} is an apocalyptic number.

2021211012211 is a deficient number, since it is larger than the sum of its proper divisors (2883413).

2021211012211 is a wasteful number, since it uses less digits than its factorization.

2021211012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883412.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2021211012211 its reverse (1122101121202), we get a palindrome (3143312133413).

The spelling of 2021211012211 in words is "two trillion, twenty-one billion, two hundred eleven million, twelve thousand, two hundred eleven".