20111225151 has 8 divisors (see below), whose sum is σ = 26878662064. Its totient is φ = 13375635840.

The previous prime is 20111225149. The next prime is 20111225191. The reversal of 20111225151 is 15152211102.

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

It is not a de Polignac number, because 20111225151 - 2¹ = 20111225149 is a prime.

It is a super-2 number, since 2×20111225151² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111225191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7960426 + ... + 7962951.

It is an arithmetic number, because the mean of its divisors is an integer number (3359832758).

Almost surely, 2^20111225151 is an apocalyptic number.

20111225151 is a deficient number, since it is larger than the sum of its proper divisors (6767436913).

20111225151 is a wasteful number, since it uses less digits than its factorization.

20111225151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15923801.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 20111225151 its reverse (15152211102), we get a palindrome (35263436253).

The spelling of 20111225151 in words is "twenty billion, one hundred eleven million, two hundred twenty-five thousand, one hundred fifty-one".