210121000121012 has 6 divisors (see below), whose sum is σ = 367711750211778. Its totient is φ = 105060500060504.

The previous prime is 210121000120873. The next prime is 210121000121041.

210121000121012 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 203088606839056 + 7032393281956 = 14250916^2 + 2651866^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26265125015123 + ... + 26265125015130.

It is an arithmetic number, because the mean of its divisors is an integer number (61285291701963).

Almost surely, 2^{210121000121012} is an apocalyptic number.

It is an amenable number.

210121000121012 is a deficient number, since it is larger than the sum of its proper divisors (157590750090766).

210121000121012 is a wasteful number, since it uses less digits than its factorization.

210121000121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52530250030257 (or 52530250030255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

It can be divided in two parts, 210121000 and 121012, that added together give a palindrome (210242012).

The spelling of 210121000121012 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred twenty-one thousand, twelve".