210012220221221 has 16 divisors (see below), whose sum is σ = 242666286568128. Its totient is φ = 179626395513600.

The previous prime is 210012220221211. The next prime is 210012220221229. The reversal of 210012220221221 is 122122022210012.

210012220221221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210012220221221 - 2²⁶ = 210012153112357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210012220221193 and 210012220221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012220221229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196981550 + ... + 198044831.

It is an arithmetic number, because the mean of its divisors is an integer number (15166642910508).

Almost surely, 2^{210012220221221} is an apocalyptic number.

It is an amenable number.

210012220221221 is a deficient number, since it is larger than the sum of its proper divisors (32654066346907).

210012220221221 is a wasteful number, since it uses less digits than its factorization.

210012220221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395029252.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210012220221221 its reverse (122122022210012), we get a palindrome (332134242431233).

The spelling of 210012220221221 in words is "two hundred ten trillion, twelve billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".