2021321211 has 64 divisors (see below), whose sum is σ = 3443478528. Its totient is φ = 1026183168.

The previous prime is 2021321209. The next prime is 2021321219. The reversal of 2021321211 is 1121231202.

It is not a de Polignac number, because 2021321211 - 2¹ = 2021321209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021321219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 978766 + ... + 980828.

It is an arithmetic number, because the mean of its divisors is an integer number (53804352).

Almost surely, 2^2021321211 is an apocalyptic number.

2021321211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2021321211 is a deficient number, since it is larger than the sum of its proper divisors (1422157317).

2021321211 is a wasteful number, since it uses less digits than its factorization.

2021321211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2021321211 is about 44959.1059853285. The cubic root of 2021321211 is about 1264.3824074207.

Adding to 2021321211 its reverse (1121231202), we get a palindrome (3142552413).

Subtracting from 2021321211 its reverse (1121231202), we obtain a palindrome (900090009).

The spelling of 2021321211 in words is "two billion, twenty-one million, three hundred twenty-one thousand, two hundred eleven".