20030221131 has 8 divisors (see below), whose sum is σ = 26718418320. Its totient is φ = 13347752352.

The previous prime is 20030221093. The next prime is 20030221157. The reversal of 20030221131 is 13112203002.

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

It is not a de Polignac number, because 20030221131 - 2⁶ = 20030221067 is a prime.

It is a super-2 number, since 2×20030221131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20030221131.

It is not an unprimeable number, because it can be changed into a prime (20030221181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423936 + ... + 1437933.

It is an arithmetic number, because the mean of its divisors is an integer number (3339802290).

Almost surely, 2^20030221131 is an apocalyptic number.

20030221131 is a deficient number, since it is larger than the sum of its proper divisors (6688197189).

20030221131 is a wasteful number, since it uses less digits than its factorization.

20030221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864205.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20030221131 its reverse (13112203002), we get a palindrome (33142424133).

The spelling of 20030221131 in words is "twenty billion, thirty million, two hundred twenty-one thousand, one hundred thirty-one".