111200211421 has 8 divisors (see below), whose sum is σ = 123883525080. Its totient is φ = 99106819392.

The previous prime is 111200211407. The next prime is 111200211517. The reversal of 111200211421 is 124112002111.

It can be written as a sum of positive squares in 4 ways, for example, as 2032747396 + 109167464025 = 45086^2 + 330405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111200211421 - 2¹⁹ = 111199687133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111200211395 and 111200211404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200211401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147480010 + ... + 147480763.

It is an arithmetic number, because the mean of its divisors is an integer number (15485440635).

Almost surely, 2^111200211421 is an apocalyptic number.

It is an amenable number.

111200211421 is a deficient number, since it is larger than the sum of its proper divisors (12683313659).

111200211421 is a wasteful number, since it uses less digits than its factorization.

111200211421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294960815.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111200211421 its reverse (124112002111), we get a palindrome (235312213532).

The spelling of 111200211421 in words is "one hundred eleven billion, two hundred million, two hundred eleven thousand, four hundred twenty-one".