201001022122 has 4 divisors (see below), whose sum is σ = 301501533186. Its totient is φ = 100500511060.

The previous prime is 201001022099. The next prime is 201001022137. The reversal of 201001022122 is 221220100102.

It is a happy number.

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., 200928959001 + 72063121 = 448251^2 + 8489^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50250255529 + ... + 50250255532.

Almost surely, 2^201001022122 is an apocalyptic number.

201001022122 is a deficient number, since it is larger than the sum of its proper divisors (100500511064).

201001022122 is a wasteful number, since it uses less digits than its factorization.

201001022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100500511063.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201001022122 its reverse (221220100102), we get a palindrome (422221122224).

The spelling of 201001022122 in words is "two hundred one billion, one million, twenty-two thousand, one hundred twenty-two".