2021123012213 has 8 divisors (see below), whose sum is σ = 2091523335936. Its totient is φ = 1951047864000.

The previous prime is 2021123012171. The next prime is 2021123012231. The reversal of 2021123012213 is 3122103211202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021123012213 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 (2021123012263) 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, 81281231 + ... + 81306092.

It is an arithmetic number, because the mean of its divisors is an integer number (261440416992).

Almost surely, 2^{2021123012213} is an apocalyptic number.

It is an amenable number.

2021123012213 is a deficient number, since it is larger than the sum of its proper divisors (70400323723).

2021123012213 is a wasteful number, since it uses less digits than its factorization.

2021123012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162587755.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2021123012213 its reverse (3122103211202), we get a palindrome (5143226223415).

The spelling of 2021123012213 in words is "two trillion, twenty-one billion, one hundred twenty-three million, twelve thousand, two hundred thirteen".