20030021331 has 16 divisors (see below), whose sum is σ = 28119776640. Its totient is φ = 12647180160.

The previous prime is 20030021317. The next prime is 20030021359. The reversal of 20030021331 is 13312003002.

It is not a de Polignac number, because 20030021331 - 2⁹ = 20030020819 is a prime.

It is a super-2 number, since 2×20030021331² (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 20030021331.

It is not an unprimeable number, because it can be changed into a prime (20030021311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179371 + ... + 268763.

It is an arithmetic number, because the mean of its divisors is an integer number (1757486040).

Almost surely, 2^20030021331 is an apocalyptic number.

20030021331 is a deficient number, since it is larger than the sum of its proper divisors (8089755309).

20030021331 is a wasteful number, since it uses less digits than its factorization.

20030021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93346.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20030021331 its reverse (13312003002), we get a palindrome (33342024333).

It can be divided in two parts, 2003002 and 1331, that multiplied together give a palindrome (2665995662).

The spelling of 20030021331 in words is "twenty billion, thirty million, twenty-one thousand, three hundred thirty-one".