20030221113131 has 4 divisors (see below), whose sum is σ = 21084443277000. Its totient is φ = 18975998949264.

The previous prime is 20030221113103. The next prime is 20030221113167. The reversal of 20030221113131 is 13131112203002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20030221113131 - 2¹⁰ = 20030221112107 is a prime.

It is a super-2 number, since 2×20030221113131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20030221110131) 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, 527111081906 + ... + 527111081943.

It is an arithmetic number, because the mean of its divisors is an integer number (5271110819250).

Almost surely, 2^{20030221113131} is an apocalyptic number.

20030221113131 is a deficient number, since it is larger than the sum of its proper divisors (1054222163869).

20030221113131 is a wasteful number, since it uses less digits than its factorization.

20030221113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054222163868.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20030221113131 its reverse (13131112203002), we get a palindrome (33161333316133).

The spelling of 20030221113131 in words is "twenty trillion, thirty billion, two hundred twenty-one million, one hundred thirteen thousand, one hundred thirty-one".