10211212212 has 12 divisors (see below), whose sum is σ = 23826161856. Its totient is φ = 3403737400.

The previous prime is 10211212189. The next prime is 10211212217. The reversal of 10211212212 is 21221211201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 10211212191 and 10211212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211212217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425467164 + ... + 425467187.

It is an arithmetic number, because the mean of its divisors is an integer number (1985513488).

Almost surely, 2^10211212212 is an apocalyptic number.

10211212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10211212212 is an abundant number, since it is smaller than the sum of its proper divisors (13614949644).

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

10211212212 is a wasteful number, since it uses less digits than its factorization.

10211212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850934358 (or 850934356 counting only the distinct ones).

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

Adding to 10211212212 its reverse (21221211201), we get a palindrome (31432423413).

The spelling of 10211212212 in words is "ten billion, two hundred eleven million, two hundred twelve thousand, two hundred twelve".