221200010021210 has 32 divisors (see below), whose sum is σ = 457217245598400. Its totient is φ = 76202874264960.

The previous prime is 221200010021129. The next prime is 221200010021213. The reversal of 221200010021210 is 12120010002122.

It is not an unprimeable number, because it can be changed into a prime (221200010021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52918660595 + ... + 52918664774.

It is an arithmetic number, because the mean of its divisors is an integer number (14288038924950).

Almost surely, 2^{221200010021210} is an apocalyptic number.

221200010021210 is an abundant number, since it is smaller than the sum of its proper divisors (236017235577190).

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

221200010021210 is a wasteful number, since it uses less digits than its factorization.

221200010021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105837325406.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221200010021210 its reverse (12120010002122), we get a palindrome (233320020023332).

The spelling of 221200010021210 in words is "two hundred twenty-one trillion, two hundred billion, ten million, twenty-one thousand, two hundred ten".