201001232123122 has 4 divisors (see below), whose sum is σ = 301501848184686. Its totient is φ = 100500616061560.

The previous prime is 201001232123089. The next prime is 201001232123137. The reversal of 201001232123122 is 221321232100102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160892455866921 + 40108776256201 = 12684339^2 + 6333149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201001232123093 and 201001232123102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50250308030779 + ... + 50250308030782.

Almost surely, 2^{201001232123122} is an apocalyptic number.

201001232123122 is a deficient number, since it is larger than the sum of its proper divisors (100500616061564).

201001232123122 is a wasteful number, since it uses less digits than its factorization.

201001232123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100500616061563.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 201001232123122 its reverse (221321232100102), we get a palindrome (422322464223224).

The spelling of 201001232123122 in words is "two hundred one trillion, one billion, two hundred thirty-two million, one hundred twenty-three thousand, one hundred twenty-two".