22011201222012 has 18 divisors (see below), whose sum is σ = 55639425311288. Its totient is φ = 7337067073992.

The previous prime is 22011201222011. The next prime is 22011201222013. The reversal of 22011201222012 is 21022210211022.

It is a happy number.

22011201222012 is a `hidden beast` number, since 220 + 1 + 120 + 122 + 201 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (22011201222011) and next prime (22011201222013).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×22011201222012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011201222011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305711128048 + ... + 305711128119.

Almost surely, 2^{22011201222012} is an apocalyptic number.

It is an amenable number.

22011201222012 is an abundant number, since it is smaller than the sum of its proper divisors (33628224089276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22011201222012 is a wasteful number, since it uses less digits than its factorization.

22011201222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611422256177 (or 611422256172 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22011201222012 its reverse (21022210211022), we get a palindrome (43033411433034).

The spelling of 22011201222012 in words is "twenty-two trillion, eleven billion, two hundred one million, two hundred twenty-two thousand, twelve".