201442004421 has 32 divisors (see below), whose sum is σ = 324738816000. Its totient is φ = 108503271360.

The previous prime is 201442004419. The next prime is 201442004443. The reversal of 201442004421 is 124400244102.

It is not a de Polignac number, because 201442004421 - 2¹ = 201442004419 is a prime.

It is a super-2 number, since 2×201442004421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201442004391 and 201442004400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201442004521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1189110 + ... + 1347911.

It is an arithmetic number, because the mean of its divisors is an integer number (10148088000).

Almost surely, 2^201442004421 is an apocalyptic number.

201442004421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201442004421 is a deficient number, since it is larger than the sum of its proper divisors (123296811579).

201442004421 is a wasteful number, since it uses less digits than its factorization.

201442004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537249.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 201442004421 its reverse (124400244102), we get a palindrome (325842248523).

The spelling of 201442004421 in words is "two hundred one billion, four hundred forty-two million, four thousand, four hundred twenty-one".