202111002122 has 4 divisors (see below), whose sum is σ = 303166503186. Its totient is φ = 101055501060.

The previous prime is 202111002091. The next prime is 202111002127. The reversal of 202111002122 is 221200111202.

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., 199718716201 + 2392285921 = 446899^2 + 48911^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202111002097 and 202111002106.

It is not an unprimeable number, because it can be changed into a prime (202111002127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50527750529 + ... + 50527750532.

Almost surely, 2^202111002122 is an apocalyptic number.

202111002122 is a deficient number, since it is larger than the sum of its proper divisors (101055501064).

202111002122 is a wasteful number, since it uses less digits than its factorization.

202111002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101055501063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202111002122 its reverse (221200111202), we get a palindrome (423311113324).

The spelling of 202111002122 in words is "two hundred two billion, one hundred eleven million, two thousand, one hundred twenty-two".