11542121020 has 24 divisors (see below), whose sum is σ = 24307920000. Its totient is φ = 4603616832.

The previous prime is 11542121011. The next prime is 11542121077. The reversal of 11542121020 is 2012124511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819820 + ... + 833779.

It is an arithmetic number, because the mean of its divisors is an integer number (1012830000).

Almost surely, 2^11542121020 is an apocalyptic number.

11542121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11542121020 is an abundant number, since it is smaller than the sum of its proper divisors (12765798980).

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

11542121020 is a wasteful number, since it uses less digits than its factorization.

11542121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653957 (or 1653955 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 11542121020 its reverse (2012124511), we get a palindrome (13554245531).

The spelling of 11542121020 in words is "eleven billion, five hundred forty-two million, one hundred twenty-one thousand, twenty".