11125142021 has 32 divisors (see below), whose sum is σ = 13431177216. Its totient is φ = 9009000000.

The previous prime is 11125142009. The next prime is 11125142051. The reversal of 11125142021 is 12024152111.

It is not a de Polignac number, because 11125142021 - 2¹⁴ = 11125125637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11125141984 and 11125142002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125142051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12211556 + ... + 12212466.

It is an arithmetic number, because the mean of its divisors is an integer number (419724288).

Almost surely, 2^11125142021 is an apocalyptic number.

It is an amenable number.

11125142021 is a deficient number, since it is larger than the sum of its proper divisors (2306035195).

11125142021 is a wasteful number, since it uses less digits than its factorization.

11125142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 11125142021 its reverse (12024152111), we get a palindrome (23149294132).

The spelling of 11125142021 in words is "eleven billion, one hundred twenty-five million, one hundred forty-two thousand, twenty-one".