20212444213 has 8 divisors (see below), whose sum is σ = 21784152600. Its totient is φ = 18643150848.

The previous prime is 20212444139. The next prime is 20212444243. The reversal of 20212444213 is 31244421202.

It can be written as a sum of positive squares in 4 ways, for example, as 3525746884 + 16686697329 = 59378^2 + 129177^2 .

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 20212444213 - 2¹³ = 20212436021 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 (20212444243) 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, 586348 + ... + 619861.

It is an arithmetic number, because the mean of its divisors is an integer number (2723019075).

Almost surely, 2^20212444213 is an apocalyptic number.

It is an amenable number.

20212444213 is a deficient number, since it is larger than the sum of its proper divisors (1571708387).

20212444213 is a wasteful number, since it uses less digits than its factorization.

20212444213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207511.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20212444213 its reverse (31244421202), we get a palindrome (51456865415).

The spelling of 20212444213 in words is "twenty billion, two hundred twelve million, four hundred forty-four thousand, two hundred thirteen".