212121023023210 has 128 divisors (see below), whose sum is σ = 451411931971584. Its totient is φ = 70229309230080.

The previous prime is 212121023023201. The next prime is 212121023023223. The reversal of 212121023023210 is 12320320121212.

It is a super-3 number, since 3×212121023023210³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 3801901074 + ... + 3801956866.

It is an arithmetic number, because the mean of its divisors is an integer number (3526655718528).

Almost surely, 2^{212121023023210} is an apocalyptic number.

212121023023210 is an abundant number, since it is smaller than the sum of its proper divisors (239290908948374).

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

212121023023210 is a wasteful number, since it uses less digits than its factorization.

212121023023210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59588.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 212121023023210 its reverse (12320320121212), we get a palindrome (224441343144422).

The spelling of 212121023023210 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-three million, twenty-three thousand, two hundred ten".