212121102200210 has 128 divisors (see below), whose sum is σ = 472591699623936. Its totient is φ = 66889242086400.

The previous prime is 212121102200171. The next prime is 212121102200213. The reversal of 212121102200210 is 12002201121212.

It is a super-3 number, since 3×212121102200210³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (212121102200213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33255785 + ... + 39117635.

It is an arithmetic number, because the mean of its divisors is an integer number (3692122653312).

Almost surely, 2^{212121102200210} is an apocalyptic number.

212121102200210 is an abundant number, since it is smaller than the sum of its proper divisors (260470597423726).

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

212121102200210 is a wasteful number, since it uses less digits than its factorization.

212121102200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862576.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212121102200210 its reverse (12002201121212), we get a palindrome (224123303321422).

The spelling of 212121102200210 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred two million, two hundred thousand, two hundred ten".