11754634221 has 40 divisors (see below), whose sum is σ = 20163924000. Its totient is φ = 6749062560.

The previous prime is 11754634201. The next prime is 11754634231. The reversal of 11754634221 is 12243645711.

11754634221 is a `hidden beast` number, since 1 + 17 + 5 + 4 + 634 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 11754634221 - 2⁵ = 11754634189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11754634201) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 330246 + ... + 364103.

It is an arithmetic number, because the mean of its divisors is an integer number (504098100).

Almost surely, 2^11754634221 is an apocalyptic number.

11754634221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11754634221 is a deficient number, since it is larger than the sum of its proper divisors (8409289779).

11754634221 is a wasteful number, since it uses less digits than its factorization.

11754634221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694391 (or 694382 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The spelling of 11754634221 in words is "eleven billion, seven hundred fifty-four million, six hundred thirty-four thousand, two hundred twenty-one".