210221020121102 has 4 divisors (see below), whose sum is σ = 315331530181656. Its totient is φ = 105110510060550.

The previous prime is 210221020121059. The next prime is 210221020121117. The reversal of 210221020121102 is 201121020122012.

210221020121102 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 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, 52555255030274 + ... + 52555255030277.

It is an arithmetic number, because the mean of its divisors is an integer number (78832882545414).

Almost surely, 2^{210221020121102} is an apocalyptic number.

210221020121102 is a deficient number, since it is larger than the sum of its proper divisors (105110510060554).

210221020121102 is a wasteful number, since it uses less digits than its factorization.

210221020121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105110510060553.

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

Adding to 210221020121102 its reverse (201121020122012), we get a palindrome (411342040243114).

The spelling of 210221020121102 in words is "two hundred ten trillion, two hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred two".