210111021020122 has 4 divisors (see below), whose sum is σ = 315166531530186. Its totient is φ = 105055510510060.

The previous prime is 210111021020093. The next prime is 210111021020141. The reversal of 210111021020122 is 221020120111012.

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., 105804038359881 + 104306982660241 = 10286109^2 + 10213079^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210111021020096 and 210111021020105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52527755255029 + ... + 52527755255032.

Almost surely, 2^{210111021020122} is an apocalyptic number.

210111021020122 is a deficient number, since it is larger than the sum of its proper divisors (105055510510064).

210111021020122 is a wasteful number, since it uses less digits than its factorization.

210111021020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105055510510063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210111021020122 its reverse (221020120111012), we get a palindrome (431131141131134).

The spelling of 210111021020122 in words is "two hundred ten trillion, one hundred eleven billion, twenty-one million, twenty thousand, one hundred twenty-two".