11011215042 has 24 divisors (see below), whose sum is σ = 24248743740. Its totient is φ = 3610234080.

The previous prime is 11011215041. The next prime is 11011215071. The reversal of 11011215042 is 24051211011.

It can be written as a sum of positive squares in 2 ways, for example, as 8332220961 + 2678994081 = 91281^2 + 51759^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11011215041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5013117 + ... + 5015312.

Almost surely, 2^11011215042 is an apocalyptic number.

11011215042 is an abundant number, since it is smaller than the sum of its proper divisors (13237528698).

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

11011215042 is a wasteful number, since it uses less digits than its factorization.

11011215042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028498 (or 10028495 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 11011215042 its reverse (24051211011), we get a palindrome (35062426053).

The spelling of 11011215042 in words is "eleven billion, eleven million, two hundred fifteen thousand, forty-two".