2011022202221 has 4 divisors (see below), whose sum is σ = 2020553113344. Its totient is φ = 2001491291100.

The previous prime is 2011022202173. The next prime is 2011022202227. The reversal of 2011022202221 is 1222022201102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2011022202221 - 2²² = 2011018007917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011022202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011022202227) 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, 4765455245 + ... + 4765455666.

It is an arithmetic number, because the mean of its divisors is an integer number (505138278336).

Almost surely, 2^{2011022202221} is an apocalyptic number.

It is an amenable number.

2011022202221 is a deficient number, since it is larger than the sum of its proper divisors (9530911123).

2011022202221 is an equidigital number, since it uses as much as digits as its factorization.

2011022202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9530911122.

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

Adding to 2011022202221 its reverse (1222022201102), we get a palindrome (3233044403323).

The spelling of 2011022202221 in words is "two trillion, eleven billion, twenty-two million, two hundred two thousand, two hundred twenty-one".