2021011212213 has 32 divisors (see below), whose sum is σ = 3423505030400. Its totient is φ = 1154294152128.

The previous prime is 2021011212203. The next prime is 2021011212223. The reversal of 2021011212213 is 3122121101202.

2021011212213 is a `hidden beast` number, since 20 + 210 + 11 + 212 + 213 = 666.

It is an interprime number because it is at equal distance from previous prime (2021011212203) and next prime (2021011212223).

It is not a de Polignac number, because 2021011212213 - 2⁴ = 2021011212197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011212203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2251606 + ... + 3018567.

It is an arithmetic number, because the mean of its divisors is an integer number (106984532200).

Almost surely, 2^{2021011212213} is an apocalyptic number.

It is an amenable number.

2021011212213 is a deficient number, since it is larger than the sum of its proper divisors (1402493818187).

2021011212213 is a wasteful number, since it uses less digits than its factorization.

2021011212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272218 (or 5272212 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2021011212213 its reverse (3122121101202), we get a palindrome (5143132313415).

The spelling of 2021011212213 in words is "two trillion, twenty-one billion, eleven million, two hundred twelve thousand, two hundred thirteen".