2221020001212 has 12 divisors (see below), whose sum is σ = 5182380002856. Its totient is φ = 740340000400.

The previous prime is 2221020001199. The next prime is 2221020001217. The reversal of 2221020001212 is 2121000201222.

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

It is a junction number, because it is equal to n+sod(n) for n = 2221020001191 and 2221020001200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221020001217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92542500039 + ... + 92542500062.

It is an arithmetic number, because the mean of its divisors is an integer number (431865000238).

Almost surely, 2^{2221020001212} is an apocalyptic number.

It is an amenable number.

2221020001212 is an abundant number, since it is smaller than the sum of its proper divisors (2961360001644).

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

2221020001212 is a wasteful number, since it uses less digits than its factorization.

2221020001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185085000108 (or 185085000106 counting only the distinct ones).

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

Adding to 2221020001212 its reverse (2121000201222), we get a palindrome (4342020202434).

The spelling of 2221020001212 in words is "two trillion, two hundred twenty-one billion, twenty million, one thousand, two hundred twelve".