202021002122 has 4 divisors (see below), whose sum is σ = 303031503186. Its totient is φ = 101010501060.

The previous prime is 202021002119. The next prime is 202021002173. The reversal of 202021002122 is 221200120202.

202021002122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 116745905761 + 85275096361 = 341681^2 + 292019^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202021002097 and 202021002106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505250529 + ... + 50505250532.

Almost surely, 2^202021002122 is an apocalyptic number.

202021002122 is a deficient number, since it is larger than the sum of its proper divisors (101010501064).

202021002122 is a wasteful number, since it uses less digits than its factorization.

202021002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101010501063.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202021002122 its reverse (221200120202), we get a palindrome (423221122324).

The spelling of 202021002122 in words is "two hundred two billion, twenty-one million, two thousand, one hundred twenty-two".