212121112022222 has 8 divisors (see below), whose sum is σ = 342657180959016. Its totient is φ = 97902051702552.

The previous prime is 212121112022203. The next prime is 212121112022243. The reversal of 212121112022222 is 222220211121212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079252154248 + ... + 4079252154299.

It is an arithmetic number, because the mean of its divisors is an integer number (42832147619877).

Almost surely, 2^{212121112022222} is an apocalyptic number.

212121112022222 is a deficient number, since it is larger than the sum of its proper divisors (130536068936794).

212121112022222 is a wasteful number, since it uses less digits than its factorization.

212121112022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158504308562.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212121112022222 its reverse (222220211121212), we get a palindrome (434341323143434).

The spelling of 212121112022222 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred twenty-two".