11721210533492 has 6 divisors (see below), whose sum is σ = 20512118433618. Its totient is φ = 5860605266744.

The previous prime is 11721210533491. The next prime is 11721210533521. The reversal of 11721210533492 is 29433501212711.

It can be written as a sum of positive squares in only one way, i.e., 8663874354916 + 3057336178576 = 2943446^2 + 1748524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721210533491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1465151316683 + ... + 1465151316690.

It is an arithmetic number, because the mean of its divisors is an integer number (3418686405603).

Almost surely, 2^{11721210533492} is an apocalyptic number.

It is an amenable number.

11721210533492 is a deficient number, since it is larger than the sum of its proper divisors (8790907900126).

11721210533492 is a wasteful number, since it uses less digits than its factorization.

11721210533492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930302633377 (or 2930302633375 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 11721210533492 in words is "eleven trillion, seven hundred twenty-one billion, two hundred ten million, five hundred thirty-three thousand, four hundred ninety-two".