201112421421 has 8 divisors (see below), whose sum is σ = 271823181760. Its totient is φ = 132238304352.

The previous prime is 201112421359. The next prime is 201112421519. The reversal of 201112421421 is 124124211102.

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

It is not a de Polignac number, because 201112421421 - 2²⁷ = 200978203693 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 (201112421221) 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, 459160561 + ... + 459160998.

It is an arithmetic number, because the mean of its divisors is an integer number (33977897720).

Almost surely, 2^201112421421 is an apocalyptic number.

It is an amenable number.

201112421421 is a deficient number, since it is larger than the sum of its proper divisors (70710760339).

201112421421 is an equidigital number, since it uses as much as digits as its factorization.

201112421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918321635.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201112421421 its reverse (124124211102), we get a palindrome (325236632523).

The spelling of 201112421421 in words is "two hundred one billion, one hundred twelve million, four hundred twenty-one thousand, four hundred twenty-one".