11421275140 has 48 divisors (see below), whose sum is σ = 27302728320. Its totient is φ = 3972615680.

The previous prime is 11421275119. The next prime is 11421275141. The reversal of 11421275140 is 4157212411.

It is a junction number, because it is equal to n+sod(n) for n = 11421275099 and 11421275108.

It is not an unprimeable number, because it can be changed into a prime (11421275141) 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, 1123525 + ... + 1133644.

It is an arithmetic number, because the mean of its divisors is an integer number (568806840).

Almost surely, 2^11421275140 is an apocalyptic number.

11421275140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421275140 is an abundant number, since it is smaller than the sum of its proper divisors (15881453180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11421275140 is a wasteful number, since it uses less digits than its factorization.

11421275140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257212 (or 2257210 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 11421275140 its reverse (4157212411), we get a palindrome (15578487551).

The spelling of 11421275140 in words is "eleven billion, four hundred twenty-one million, two hundred seventy-five thousand, one hundred forty".