201000322421 has 16 divisors (see below), whose sum is σ = 203778731520. Its totient is φ = 198234241920.

The previous prime is 201000322399. The next prime is 201000322427. The reversal of 201000322421 is 124223000102.

It is a cyclic number.

It is not a de Polignac number, because 201000322421 - 2¹⁴ = 201000306037 is a prime.

It is a super-2 number, since 2×201000322421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201000322421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000322427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85859711 + ... + 85862051.

It is an arithmetic number, because the mean of its divisors is an integer number (12736170720).

Almost surely, 2^201000322421 is an apocalyptic number.

It is an amenable number.

201000322421 is a deficient number, since it is larger than the sum of its proper divisors (2778409099).

201000322421 is a wasteful number, since it uses less digits than its factorization.

201000322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 201000322421 its reverse (124223000102), we get a palindrome (325223322523).

The spelling of 201000322421 in words is "two hundred one billion, three hundred twenty-two thousand, four hundred twenty-one".