10211111212 has 24 divisors (see below), whose sum is σ = 17975276480. Its totient is φ = 5075375760.

The previous prime is 10211111191. The next prime is 10211111227. The reversal of 10211111212 is 21211111201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10211111192 and 10211111201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758839 + ... + 772177.

Almost surely, 2^10211111212 is an apocalyptic number.

It is an amenable number.

10211111212 is a deficient number, since it is larger than the sum of its proper divisors (7764165268).

10211111212 is a wasteful number, since it uses less digits than its factorization.

10211111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14461 (or 14459 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10211111212 its reverse (21211111201), we get a palindrome (31422222413).

The spelling of 10211111212 in words is "ten billion, two hundred eleven million, one hundred eleven thousand, two hundred twelve".