210221001110122 has 4 divisors (see below), whose sum is σ = 315331501665186. Its totient is φ = 105110500555060.

The previous prime is 210221001110101. The next prime is 210221001110143. The reversal of 210221001110122 is 221011100122012.

210221001110122 is digitally balanced in base 2, 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 is an interprime number because it is at equal distance from previous prime (210221001110101) and next prime (210221001110143).

It can be written as a sum of positive squares in only one way, i.e., 142363293328881 + 67857707781241 = 11931609^2 + 8237579^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210221001110096 and 210221001110105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52555250277529 + ... + 52555250277532.

Almost surely, 2^{210221001110122} is an apocalyptic number.

210221001110122 is a deficient number, since it is larger than the sum of its proper divisors (105110500555064).

210221001110122 is a wasteful number, since it uses less digits than its factorization.

210221001110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105110500555063.

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

Adding to 210221001110122 its reverse (221011100122012), we get a palindrome (431232101232134).

The spelling of 210221001110122 in words is "two hundred ten trillion, two hundred twenty-one billion, one million, one hundred ten thousand, one hundred twenty-two".