212100002221210 has 16 divisors (see below), whose sum is σ = 382035717356616. Its totient is φ = 84783175697728.

The previous prime is 212100002221067. The next prime is 212100002221231. The reversal of 212100002221210 is 12122200001212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 201754496648961 + 10345505572249 = 14204031^2 + 3216443^2 .

It is a super-3 number, since 3×212100002221210³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7103133169 + ... + 7103163028.

Almost surely, 2^{212100002221210} is an apocalyptic number.

212100002221210 is a deficient number, since it is larger than the sum of its proper divisors (169935715135406).

212100002221210 is a wasteful number, since it uses less digits than its factorization.

212100002221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14206297697.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212100002221210 its reverse (12122200001212), we get a palindrome (224222202222422).

The spelling of 212100002221210 in words is "two hundred twelve trillion, one hundred billion, two million, two hundred twenty-one thousand, two hundred ten".