11012011988 has 6 divisors (see below), whose sum is σ = 19271020986. Its totient is φ = 5506005992.

The previous prime is 11012011957. The next prime is 11012011991. The reversal of 11012011988 is 88911021011.

It can be written as a sum of positive squares in only one way, i.e., 6516041284 + 4495970704 = 80722^2 + 67052^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1376501495 + ... + 1376501502.

It is an arithmetic number, because the mean of its divisors is an integer number (3211836831).

Almost surely, 2^11012011988 is an apocalyptic number.

It is an amenable number.

11012011988 is a deficient number, since it is larger than the sum of its proper divisors (8259008998).

11012011988 is a wasteful number, since it uses less digits than its factorization.

11012011988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753003001 (or 2753002999 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 32.

Adding to 11012011988 its reverse (88911021011), we get a palindrome (99923032999).

The spelling of 11012011988 in words is "eleven billion, twelve million, eleven thousand, nine hundred eighty-eight".