212121022022222 has 16 divisors (see below), whose sum is σ = 325795613225472. Its totient is φ = 103551490300440.

The previous prime is 212121022022219. The next prime is 212121022022227. The reversal of 212121022022222 is 222220220121212.

It is a super-3 number, since 3×212121022022222³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121022022227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7251490298 + ... + 7251519549.

It is an arithmetic number, because the mean of its divisors is an integer number (20362225826592).

Almost surely, 2^{212121022022222} is an apocalyptic number.

212121022022222 is a deficient number, since it is larger than the sum of its proper divisors (113674591203250).

212121022022222 is a wasteful number, since it uses less digits than its factorization.

212121022022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14503010023.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 212121022022222 its reverse (222220220121212), we get a palindrome (434341242143434).

The spelling of 212121022022222 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-two million, twenty-two thousand, two hundred twenty-two".