210221112211122 has 16 divisors (see below), whose sum is σ = 420954334327872. Its totient is φ = 69988352419440.

The previous prime is 210221112211109. The next prime is 210221112211127. The reversal of 210221112211122 is 221112211122012.

It is a super-2 number, since 2×210221112211122² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210221112211127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21337907398 + ... + 21337917249.

It is an arithmetic number, because the mean of its divisors is an integer number (26309645895492).

Almost surely, 2^{210221112211122} is an apocalyptic number.

210221112211122 is an abundant number, since it is smaller than the sum of its proper divisors (210733222116750).

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

210221112211122 is a wasteful number, since it uses less digits than its factorization.

210221112211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42675825473.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 210221112211122 its reverse (221112211122012), we get a palindrome (431333323333134).

The spelling of 210221112211122 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred twenty-two".