201000020100122 has 4 divisors (see below), whose sum is σ = 301500030150186. Its totient is φ = 100500010050060.

The previous prime is 201000020100097. The next prime is 201000020100127. The reversal of 201000020100122 is 221001020000102.

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., 111359287341481 + 89640732758641 = 10552691^2 + 9467879^2 .

It is not an unprimeable number, because it can be changed into a prime (201000020100127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50250005025029 + ... + 50250005025032.

Almost surely, 2^{201000020100122} is an apocalyptic number.

201000020100122 is a deficient number, since it is larger than the sum of its proper divisors (100500010050064).

201000020100122 is a wasteful number, since it uses less digits than its factorization.

201000020100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100500010050063.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201000020100122 its reverse (221001020000102), we get a palindrome (422001040100224).

The spelling of 201000020100122 in words is "two hundred one trillion, twenty million, one hundred thousand, one hundred twenty-two".