11211911356 has 6 divisors (see below), whose sum is σ = 19620844880. Its totient is φ = 5605955676.

The previous prime is 11211911317. The next prime is 11211911369. The reversal of 11211911356 is 65311911211.

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, 1401488916 + ... + 1401488923.

Almost surely, 2^11211911356 is an apocalyptic number.

It is an amenable number.

11211911356 is a deficient number, since it is larger than the sum of its proper divisors (8408933524).

11211911356 is a wasteful number, since it uses less digits than its factorization.

11211911356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802977843 (or 2802977841 counting only the distinct ones).

The product of its digits is 1620, while the sum is 31.

The spelling of 11211911356 in words is "eleven billion, two hundred eleven million, nine hundred eleven thousand, three hundred fifty-six".