22012212111212 has 24 divisors (see below), whose sum is σ = 39540390563520. Its totient is φ = 10718444472080.

The previous prime is 22012212111151. The next prime is 22012212111221. The reversal of 22012212111212 is 21211121221022.

It is a super-2 number, since 2×22012212111212² (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, 435825614 + ... + 435876117.

It is an arithmetic number, because the mean of its divisors is an integer number (1647516273480).

Almost surely, 2^{22012212111212} is an apocalyptic number.

It is an amenable number.

22012212111212 is a deficient number, since it is larger than the sum of its proper divisors (17528178452308).

22012212111212 is a wasteful number, since it uses less digits than its factorization.

22012212111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871701901 (or 871701899 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22012212111212 its reverse (21211121221022), we get a palindrome (43223333332234).

The spelling of 22012212111212 in words is "twenty-two trillion, twelve billion, two hundred twelve million, one hundred eleven thousand, two hundred twelve".