201112401421 has 4 divisors (see below), whose sum is σ = 202580375292. Its totient is φ = 199644427552.

The previous prime is 201112401317. The next prime is 201112401449. The reversal of 201112401421 is 124104211102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124104211102 = 2 ⋅62052105551.

It can be written as a sum of positive squares in 2 ways, for example, as 172548021321 + 28564380100 = 415389^2 + 169010^2 .

It is a cyclic number.

It is not a de Polignac number, because 201112401421 - 2⁷ = 201112401293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112401481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733986730 + ... + 733987003.

It is an arithmetic number, because the mean of its divisors is an integer number (50645093823).

Almost surely, 2^201112401421 is an apocalyptic number.

It is an amenable number.

201112401421 is a deficient number, since it is larger than the sum of its proper divisors (1467973871).

201112401421 is a wasteful number, since it uses less digits than its factorization.

201112401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467973870.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201112401421 its reverse (124104211102), we get a palindrome (325216612523).

The spelling of 201112401421 in words is "two hundred one billion, one hundred twelve million, four hundred one thousand, four hundred twenty-one".