21010200110122 has 16 divisors (see below), whose sum is σ = 32033683353672. Its totient is φ = 10332324357120.

The previous prime is 21010200110113. The next prime is 21010200110171. The reversal of 21010200110122 is 22101100201012.

It can be written as a sum of positive squares in 4 ways, for example, as 14723942678041 + 6286257432081 = 3837179^2 + 2507241^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2413543 + ... + 6917050.

Almost surely, 2^{21010200110122} is an apocalyptic number.

21010200110122 is a deficient number, since it is larger than the sum of its proper divisors (11023483243550).

21010200110122 is a wasteful number, since it uses less digits than its factorization.

21010200110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349113.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21010200110122 its reverse (22101100201012), we get a palindrome (43111300311134).

The spelling of 21010200110122 in words is "twenty-one trillion, ten billion, two hundred million, one hundred ten thousand, one hundred twenty-two".