2221211110212 has 24 divisors (see below), whose sum is σ = 5758695471200. Its totient is φ = 740403703368.

The previous prime is 2221211110199. The next prime is 2221211110213. The reversal of 2221211110212 is 2120111121222.

2221211110212 is a `hidden beast` number, since 222 + 121 + 1 + 110 + 212 = 666.

It is a super-2 number, since 2×2221211110212² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2221211110213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10283384662 + ... + 10283384877.

Almost surely, 2^{2221211110212} is an apocalyptic number.

It is an amenable number.

2221211110212 is an abundant number, since it is smaller than the sum of its proper divisors (3537484360988).

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

2221211110212 is a wasteful number, since it uses less digits than its factorization.

2221211110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20566769552 (or 20566769544 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2221211110212 its reverse (2120111121222), we get a palindrome (4341322231434).

The spelling of 2221211110212 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, one hundred ten thousand, two hundred twelve".