11021200551 has 16 divisors (see below), whose sum is σ = 16332196320. Its totient is φ = 7345445760.

The previous prime is 11021200543. The next prime is 11021200573. The reversal of 11021200551 is 15500212011.

11021200551 is a `hidden beast` number, since 1 + 102 + 12 + 0 + 0 + 551 = 666.

It is not a de Polignac number, because 11021200551 - 2³ = 11021200543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021201551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47281 + ... + 155813.

It is an arithmetic number, because the mean of its divisors is an integer number (1020762270).

Almost surely, 2^11021200551 is an apocalyptic number.

11021200551 is a deficient number, since it is larger than the sum of its proper divisors (5310995769).

11021200551 is a wasteful number, since it uses less digits than its factorization.

11021200551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112303 (or 112297 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 11021200551 its reverse (15500212011), we get a palindrome (26521412562).

The spelling of 11021200551 in words is "eleven billion, twenty-one million, two hundred thousand, five hundred fifty-one".