210221112122010 has 128 divisors (see below), whose sum is σ = 615602342891520. Its totient is φ = 50625192456000.

The previous prime is 210221112122009. The next prime is 210221112122027. The reversal of 210221112122010 is 10221211122012.

210221112122010 is a `hidden beast` number, since 2 + 102 + 211 + 121 + 220 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233927422 + ... + 234824361.

It is an arithmetic number, because the mean of its divisors is an integer number (4809393303840).

Almost surely, 2^{210221112122010} is an apocalyptic number.

210221112122010 is an abundant number, since it is smaller than the sum of its proper divisors (405381230769510).

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

210221112122010 is a wasteful number, since it uses less digits than its factorization.

210221112122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468751961 (or 468751955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210221112122010 its reverse (10221211122012), we get a palindrome (220442323244022).

The spelling of 210221112122010 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, ten".