221012100211210 has 512 divisors, whose sum is σ = 563269303296000. Its totient is φ = 60263328153600.

The previous prime is 221012100211127. The next prime is 221012100211211. The reversal of 221012100211210 is 12112001210122.

It is not an unprimeable number, because it can be changed into a prime (221012100211211) 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 255 ways as a sum of consecutive naturals, for example, 7645082236 + ... + 7645111144.

It is an arithmetic number, because the mean of its divisors is an integer number (1100135358000).

Almost surely, 2^{221012100211210} is an apocalyptic number.

221012100211210 is an abundant number, since it is smaller than the sum of its proper divisors (342257203084790).

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

221012100211210 is a wasteful number, since it uses less digits than its factorization.

221012100211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29550.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221012100211210 its reverse (12112001210122), we get a palindrome (233124101421332).

The spelling of 221012100211210 in words is "two hundred twenty-one trillion, twelve billion, one hundred million, two hundred eleven thousand, two hundred ten".