220011222012 has 12 divisors (see below), whose sum is σ = 513359518056. Its totient is φ = 73337074000.

The previous prime is 220011221999. The next prime is 220011222043. The reversal of 220011222012 is 210222110022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×220011222012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220011221982 and 220011222000.

It is a congruent number.

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, 9167134239 + ... + 9167134262.

It is an arithmetic number, because the mean of its divisors is an integer number (42779959838).

Almost surely, 2^220011222012 is an apocalyptic number.

It is an amenable number.

220011222012 is an abundant number, since it is smaller than the sum of its proper divisors (293348296044).

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

220011222012 is a wasteful number, since it uses less digits than its factorization.

220011222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18334268508 (or 18334268506 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220011222012 its reverse (210222110022), we get a palindrome (430233332034).

The spelling of 220011222012 in words is "two hundred twenty billion, eleven million, two hundred twenty-two thousand, twelve".