212222022210220 has 24 divisors (see below), whose sum is σ = 486181359973008. Its totient is φ = 77171644440000.

The previous prime is 212222022210199. The next prime is 212222022210227. The reversal of 212222022210220 is 22012220222212.

It is a super-2 number, since 2×212222022210220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212222022210191 and 212222022210200.

It is not an unprimeable number, because it can be changed into a prime (212222022210227) 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, 482322777531 + ... + 482322777970.

It is an arithmetic number, because the mean of its divisors is an integer number (20257556665542).

Almost surely, 2^{212222022210220} is an apocalyptic number.

212222022210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222022210220 is an abundant number, since it is smaller than the sum of its proper divisors (273959337762788).

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

212222022210220 is a wasteful number, since it uses less digits than its factorization.

212222022210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964645555521 (or 964645555519 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 212222022210220 its reverse (22012220222212), we get a palindrome (234234242432432).

The spelling of 212222022210220 in words is "two hundred twelve trillion, two hundred twenty-two billion, twenty-two million, two hundred ten thousand, two hundred twenty".