2021211011213 has 2 divisors, whose sum is σ = 2021211011214. Its totient is φ = 2021211011212.

The previous prime is 2021211011189. The next prime is 2021211011221. The reversal of 2021211011213 is 3121101121202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2021210986249 + 24964 = 1421693^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021211011213 - 2¹⁸ = 2021210749069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021211011191 and 2021211011200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021211011243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010605505606 + 1010605505607.

It is an arithmetic number, because the mean of its divisors is an integer number (1010605505607).

Almost surely, 2^{2021211011213} is an apocalyptic number.

It is an amenable number.

2021211011213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021211011213 is an equidigital number, since it uses as much as digits as its factorization.

2021211011213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2021211011213 its reverse (3121101121202), we get a palindrome (5142312132415).

The spelling of 2021211011213 in words is "two trillion, twenty-one billion, two hundred eleven million, eleven thousand, two hundred thirteen".