20211202013 has 4 divisors (see below), whose sum is σ = 20488067868. Its totient is φ = 19934336160.

The previous prime is 20211202003. The next prime is 20211202049. The reversal of 20211202013 is 31020211202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6202822564 + 14008379449 = 78758^2 + 118357^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211202013 - 2¹² = 20211197917 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 (20211202003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138432818 + ... + 138432963.

It is an arithmetic number, because the mean of its divisors is an integer number (5122016967).

Almost surely, 2^20211202013 is an apocalyptic number.

It is an amenable number.

20211202013 is a deficient number, since it is larger than the sum of its proper divisors (276865855).

20211202013 is an equidigital number, since it uses as much as digits as its factorization.

20211202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276865854.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20211202013 its reverse (31020211202), we get a palindrome (51231413215).

The spelling of 20211202013 in words is "twenty billion, two hundred eleven million, two hundred two thousand, thirteen".