2021240611213 has 8 divisors (see below), whose sum is σ = 2070635660856. Its totient is φ = 1971850156800.

The previous prime is 2021240611211. The next prime is 2021240611217. The reversal of 2021240611213 is 3121160421202.

It can be written as a sum of positive squares in 4 ways, for example, as 277515079209 + 1743725532004 = 526797^2 + 1320502^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021240611213 - 2¹ = 2021240611211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021240611211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249856 + ... + 2026057.

It is an arithmetic number, because the mean of its divisors is an integer number (258829457607).

Almost surely, 2^{2021240611213} is an apocalyptic number.

It is an amenable number.

2021240611213 is a deficient number, since it is larger than the sum of its proper divisors (49395049643).

2021240611213 is a wasteful number, since it uses less digits than its factorization.

2021240611213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297615.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 2021240611213 in words is "two trillion, twenty-one billion, two hundred forty million, six hundred eleven thousand, two hundred thirteen".