11212111220012 has 24 divisors (see below), whose sum is σ = 20331227199360. Its totient is φ = 5403826108800.

The previous prime is 11212111220003. The next prime is 11212111220021. The reversal of 11212111220012 is 21002211121211.

It is an interprime number because it is at equal distance from previous prime (11212111220003) and next prime (11212111220021).

It is a super-2 number, since 2×11212111220012² (a number of 27 digits) contains 22 as substring.

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, 79547489 + ... + 79688312.

It is an arithmetic number, because the mean of its divisors is an integer number (847134466640).

Almost surely, 2^{11212111220012} is an apocalyptic number.

It is an amenable number.

11212111220012 is a deficient number, since it is larger than the sum of its proper divisors (9119115979348).

11212111220012 is a wasteful number, since it uses less digits than its factorization.

11212111220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159236441 (or 159236439 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11212111220012 its reverse (21002211121211), we get a palindrome (32214322341223).

The spelling of 11212111220012 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty thousand, twelve".