11101001012 has 6 divisors (see below), whose sum is σ = 19426751778. Its totient is φ = 5550500504.

The previous prime is 11101000993. The next prime is 11101001029. The reversal of 11101001012 is 21010010111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6103359376 + 4997641636 = 78124^2 + 70694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387625123 + ... + 1387625130.

It is an arithmetic number, because the mean of its divisors is an integer number (3237791963).

Almost surely, 2^11101001012 is an apocalyptic number.

It is an amenable number.

11101001012 is a deficient number, since it is larger than the sum of its proper divisors (8325750766).

11101001012 is a wasteful number, since it uses less digits than its factorization.

11101001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775250257 (or 2775250255 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11101001012 its reverse (21010010111), we get a palindrome (32111011123).

Subtracting 11101001012 from its reverse (21010010111), we obtain a palindrome (9909009099).

The spelling of 11101001012 in words is "eleven billion, one hundred one million, one thousand, twelve".