22120222011012 has 18 divisors (see below), whose sum is σ = 55915005639038. Its totient is φ = 7373407336992.

The previous prime is 22120222010987. The next prime is 22120222011079. The reversal of 22120222011012 is 21011022202122.

It is a happy number.

22120222011012 is a `hidden beast` number, since 221 + 202 + 220 + 1 + 10 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19225208238336 + 2895013772676 = 4384656^2 + 1701474^2 .

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307225305673 + ... + 307225305744.

Almost surely, 2^{22120222011012} is an apocalyptic number.

It is an amenable number.

22120222011012 is an abundant number, since it is smaller than the sum of its proper divisors (33794783628026).

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

22120222011012 is a wasteful number, since it uses less digits than its factorization.

22120222011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614450611427 (or 614450611422 counting only the distinct ones).

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

Adding to 22120222011012 its reverse (21011022202122), we get a palindrome (43131244213134).

The spelling of 22120222011012 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, eleven thousand, twelve".