201134423021 has 8 divisors (see below), whose sum is σ = 230957335104. Its totient is φ = 171583866720.

The previous prime is 201134422991. The next prime is 201134423059. The reversal of 201134423021 is 120324431102.

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

It is not a de Polignac number, because 201134423021 - 2¹⁰ = 201134421997 is a prime.

It is a super-2 number, since 2×201134423021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201134423071) 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, 68087360 + ... + 68090313.

It is an arithmetic number, because the mean of its divisors is an integer number (28869666888).

Almost surely, 2^201134423021 is an apocalyptic number.

It is an amenable number.

201134423021 is a deficient number, since it is larger than the sum of its proper divisors (29822912083).

201134423021 is a wasteful number, since it uses less digits than its factorization.

201134423021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136177891.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201134423021 its reverse (120324431102), we get a palindrome (321458854123).

The spelling of 201134423021 in words is "two hundred one billion, one hundred thirty-four million, four hundred twenty-three thousand, twenty-one".