10111212111212 has 12 divisors (see below), whose sum is σ = 18028481972256. Its totient is φ = 4960217262000.

The previous prime is 10111212111179. The next prime is 10111212111271. The reversal of 10111212111212 is 21211121211101.

It is a super-2 number, since 2×10111212111212² (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 3 ways as a sum of consecutive naturals, for example, 23847198164 + ... + 23847198587.

It is an arithmetic number, because the mean of its divisors is an integer number (1502373497688).

Almost surely, 2^{10111212111212} is an apocalyptic number.

It is an amenable number.

10111212111212 is a deficient number, since it is larger than the sum of its proper divisors (7917269861044).

10111212111212 is a wasteful number, since it uses less digits than its factorization.

10111212111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47694396808 (or 47694396806 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 10111212111212 its reverse (21211121211101), we get a palindrome (31322333322313).

The spelling of 10111212111212 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, two hundred twelve".