2120221212 has 48 divisors (see below), whose sum is σ = 5090397312. Its totient is φ = 686352960.

The previous prime is 2120221199. The next prime is 2120221261. The reversal of 2120221212 is 2121220212.

It is a super-3 number, since 3×2120221212³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120221191 and 2120221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249343 + ... + 257705.

It is an arithmetic number, because the mean of its divisors is an integer number (106049944).

Almost surely, 2^2120221212 is an apocalyptic number.

It is an amenable number.

2120221212 is an abundant number, since it is smaller than the sum of its proper divisors (2970176100).

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

2120221212 is a wasteful number, since it uses less digits than its factorization.

2120221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8978 (or 8976 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2120221212 is about 46045.8598790380. The cubic root of 2120221212 is about 1284.6763379098.

Adding to 2120221212 its reverse (2121220212), we get a palindrome (4241441424).

The spelling of 2120221212 in words is "two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twelve".