210121020221012 has 12 divisors (see below), whose sum is σ = 367712945316276. Its totient is φ = 105060178702080.

The previous prime is 210121020220927. The next prime is 210121020221023. The reversal of 210121020221012 is 210122020121012.

210121020221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9677549487376 + 200443470733636 = 3110876^2 + 14157806^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81422813 + ... + 83963780.

It is an arithmetic number, because the mean of its divisors is an integer number (30642745443023).

Almost surely, 2^{210121020221012} is an apocalyptic number.

It is an amenable number.

210121020221012 is a deficient number, since it is larger than the sum of its proper divisors (157591925095264).

210121020221012 is a wasteful number, since it uses less digits than its factorization.

210121020221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165704218 (or 165704216 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210121020221012 its reverse (210122020121012), we get a palindrome (420243040342024).

The spelling of 210121020221012 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, twelve".