20101103331 has 16 divisors (see below), whose sum is σ = 29145004704. Its totient is φ = 12271578624.

The previous prime is 20101103287. The next prime is 20101103357. The reversal of 20101103331 is 13330110102.

It is not a de Polignac number, because 20101103331 - 2¹³ = 20101095139 is a prime.

It is a super-2 number, since 2×20101103331² (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 20101103331.

It is not an unprimeable number, because it can be changed into a prime (20101103131) 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, 5324320 + ... + 5328093.

It is an arithmetic number, because the mean of its divisors is an integer number (1821562794).

Almost surely, 2^20101103331 is an apocalyptic number.

20101103331 is a deficient number, since it is larger than the sum of its proper divisors (9043901373).

20101103331 is a wasteful number, since it uses less digits than its factorization.

20101103331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10652470.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 20101103331 its reverse (13330110102), we get a palindrome (33431213433).

The spelling of 20101103331 in words is "twenty billion, one hundred one million, one hundred three thousand, three hundred thirty-one".