10112221212 has 48 divisors (see below), whose sum is σ = 24244440192. Its totient is φ = 3278076480.

The previous prime is 10112221199. The next prime is 10112221237. The reversal of 10112221212 is 21212221101.

It is a junction number, because it is equal to n+sod(n) for n = 10112221191 and 10112221200.

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, 1258287 + ... + 1266297.

It is an arithmetic number, because the mean of its divisors is an integer number (505092504).

Almost surely, 2^10112221212 is an apocalyptic number.

10112221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10112221212 is an abundant number, since it is smaller than the sum of its proper divisors (14132218980).

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

10112221212 is a wasteful number, since it uses less digits than its factorization.

10112221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898 (or 10896 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10112221212 its reverse (21212221101), we get a palindrome (31324442313).

The spelling of 10112221212 in words is "ten billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twelve".