111421210401 has 48 divisors (see below), whose sum is σ = 163565558208. Its totient is φ = 73081008000.

The previous prime is 111421210379. The next prime is 111421210441. The reversal of 111421210401 is 104012124111.

111421210401 is a `hidden beast` number, since 1 + 1 + 142 + 121 + 0 + 401 = 666.

It is not a de Polignac number, because 111421210401 - 2⁶ = 111421210337 is a prime.

It is a super-3 number, since 3×111421210401³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (111421210441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164580475 + ... + 164581151.

It is an arithmetic number, because the mean of its divisors is an integer number (3407615796).

Almost surely, 2^111421210401 is an apocalyptic number.

It is an amenable number.

111421210401 is a deficient number, since it is larger than the sum of its proper divisors (52144347807).

111421210401 is a wasteful number, since it uses less digits than its factorization.

111421210401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111421210401 its reverse (104012124111), we get a palindrome (215433334512).

The spelling of 111421210401 in words is "one hundred eleven billion, four hundred twenty-one million, two hundred ten thousand, four hundred one".