11131151421 has 16 divisors (see below), whose sum is σ = 16923380544. Its totient is φ = 6447001344.

The previous prime is 11131151407. The next prime is 11131151443. The reversal of 11131151421 is 12415113111.

It is not a de Polignac number, because 11131151421 - 2⁵ = 11131151389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131151401) 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, 8393871 + ... + 8395196.

It is an arithmetic number, because the mean of its divisors is an integer number (1057711284).

Almost surely, 2^11131151421 is an apocalyptic number.

It is an amenable number.

11131151421 is a deficient number, since it is larger than the sum of its proper divisors (5792229123).

11131151421 is a wasteful number, since it uses less digits than its factorization.

11131151421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16789100.

The product of its digits is 120, while the sum is 21.

Adding to 11131151421 its reverse (12415113111), we get a palindrome (23546264532).

The spelling of 11131151421 in words is "eleven billion, one hundred thirty-one million, one hundred fifty-one thousand, four hundred twenty-one".