11212120016 has 20 divisors (see below), whose sum is σ = 21738540192. Its totient is φ = 5602174176.

The previous prime is 11212119979. The next prime is 11212120033. The reversal of 11212120016 is 61002121211.

It is a junction number, because it is equal to n+sod(n) for n = 11212119976 and 11212120003.

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, 218990 + ... + 265293.

Almost surely, 2^11212120016 is an apocalyptic number.

11212120016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11212120016 is a deficient number, since it is larger than the sum of its proper divisors (10526420176).

11212120016 is a wasteful number, since it uses less digits than its factorization.

11212120016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485738 (or 485732 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11212120016 its reverse (61002121211), we get a palindrome (72214241227).

The spelling of 11212120016 in words is "eleven billion, two hundred twelve million, one hundred twenty thousand, sixteen".