11101001101972 has 6 divisors (see below), whose sum is σ = 19426751928458. Its totient is φ = 5550500550984.

The previous prime is 11101001101921. The next prime is 11101001101973. The reversal of 11101001101972 is 27910110010111.

It can be written as a sum of positive squares in only one way, i.e., 10686321772036 + 414679329936 = 3268994^2 + 643956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101001101973) by changing a digit.

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, 1387625137743 + ... + 1387625137750.

Almost surely, 2^{11101001101972} is an apocalyptic number.

It is an amenable number.

11101001101972 is a deficient number, since it is larger than the sum of its proper divisors (8325750826486).

11101001101972 is a wasteful number, since it uses less digits than its factorization.

11101001101972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775250275497 (or 2775250275495 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 25.

The spelling of 11101001101972 in words is "eleven trillion, one hundred one billion, one million, one hundred one thousand, nine hundred seventy-two".