210102121012 has 36 divisors (see below), whose sum is σ = 427748133540. Its totient is φ = 90035293824.

The previous prime is 210102120989. The next prime is 210102121063. The reversal of 210102121012 is 210121201012.

It can be written as a sum of positive squares in 2 ways, for example, as 90272606116 + 119829514896 = 300454^2 + 346164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210102120983 and 210102121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2321914 + ... + 2410702.

Almost surely, 2^210102121012 is an apocalyptic number.

It is an amenable number.

210102121012 is an abundant number, since it is smaller than the sum of its proper divisors (217646012528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210102121012 is a wasteful number, since it uses less digits than its factorization.

210102121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100880 (or 100871 counting only the distinct ones).

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

Adding to 210102121012 its reverse (210121201012), we get a palindrome (420223322024).

The spelling of 210102121012 in words is "two hundred ten billion, one hundred two million, one hundred twenty-one thousand, twelve".