10220121212 has 12 divisors (see below), whose sum is σ = 20440242480. Its totient is φ = 4380051936.

The previous prime is 10220121181. The next prime is 10220121227. The reversal of 10220121212 is 21212102201.

10220121212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

10220121212 is a modest number, since divided by 121212 gives 10220 as remainder.

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, 182502137 + ... + 182502192.

It is an arithmetic number, because the mean of its divisors is an integer number (1703353540).

Almost surely, 2^10220121212 is an apocalyptic number.

It is an amenable number.

10220121212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10220121212 is a wasteful number, since it uses less digits than its factorization.

10220121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365004340 (or 365004338 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10220121212 its reverse (21212102201), we get a palindrome (31432223413).

It can be divided in two parts, 102201 and 21212, that multiplied together give a palindrome (2167887612).

The spelling of 10220121212 in words is "ten billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twelve".