20210012122 has 4 divisors (see below), whose sum is σ = 30315018186. Its totient is φ = 10105006060.

The previous prime is 20210012059. The next prime is 20210012129. The reversal of 20210012122 is 22121001202.

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., 19441003761 + 769008361 = 139431^2 + 27731^2 .

It is not an unprimeable number, because it can be changed into a prime (20210012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052503029 + ... + 5052503032.

Almost surely, 2^20210012122 is an apocalyptic number.

20210012122 is a deficient number, since it is larger than the sum of its proper divisors (10105006064).

20210012122 is a wasteful number, since it uses less digits than its factorization.

20210012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105006063.

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

Adding to 20210012122 its reverse (22121001202), we get a palindrome (42331013324).

The spelling of 20210012122 in words is "twenty billion, two hundred ten million, twelve thousand, one hundred twenty-two".