201121010434 has 12 divisors (see below), whose sum is σ = 315368391366. Its totient is φ = 96188308832.

The previous prime is 201121010423. The next prime is 201121010449. The reversal of 201121010434 is 434010121102.

It can be written as a sum of positive squares in only one way, i.e., 199320281209 + 1800729225 = 446453^2 + 42435^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95046679 + ... + 95048794.

Almost surely, 2^201121010434 is an apocalyptic number.

201121010434 is a deficient number, since it is larger than the sum of its proper divisors (114247380932).

201121010434 is a wasteful number, since it uses less digits than its factorization.

201121010434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190095521 (or 190095498 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201121010434 its reverse (434010121102), we get a palindrome (635131131536).

The spelling of 201121010434 in words is "two hundred one billion, one hundred twenty-one million, ten thousand, four hundred thirty-four".