2011220021222 has 4 divisors (see below), whose sum is σ = 3016830031836. Its totient is φ = 1005610010610.

The previous prime is 2011220021221. The next prime is 2011220021233. The reversal of 2011220021222 is 2221200221102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2011220021222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011220021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502805005304 + ... + 502805005307.

It is an arithmetic number, because the mean of its divisors is an integer number (754207507959).

Almost surely, 2^{2011220021222} is an apocalyptic number.

2011220021222 is a deficient number, since it is larger than the sum of its proper divisors (1005610010614).

2011220021222 is a wasteful number, since it uses less digits than its factorization.

2011220021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005610010613.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2011220021222 its reverse (2221200221102), we get a palindrome (4232420242324).

The spelling of 2011220021222 in words is "two trillion, eleven billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".