20010120122 has 4 divisors (see below), whose sum is σ = 30015180186. Its totient is φ = 10005060060.

The previous prime is 20010120041. The next prime is 20010120131. The reversal of 20010120122 is 22102101002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22102101002 = 2 ⋅11051050501.

It can be written as a sum of positive squares in only one way, i.e., 16437547681 + 3572572441 = 128209^2 + 59771^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002530029 + ... + 5002530032.

Almost surely, 2^20010120122 is an apocalyptic number.

20010120122 is a deficient number, since it is larger than the sum of its proper divisors (10005060064).

20010120122 is a wasteful number, since it uses less digits than its factorization.

20010120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005060063.

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

Adding to 20010120122 its reverse (22102101002), we get a palindrome (42112221124).

The spelling of 20010120122 in words is "twenty billion, ten million, one hundred twenty thousand, one hundred twenty-two".