22220212011 has 4 divisors (see below), whose sum is σ = 29626949352. Its totient is φ = 14813474672.

The previous prime is 22220211989. The next prime is 22220212013. The reversal of 22220212011 is 11021202222.

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

It is a cyclic number.

It is not a de Polignac number, because 22220212011 - 2¹⁸ = 22219949867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22220212013) 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, 3703368666 + ... + 3703368671.

It is an arithmetic number, because the mean of its divisors is an integer number (7406737338).

Almost surely, 2^22220212011 is an apocalyptic number.

22220212011 is a deficient number, since it is larger than the sum of its proper divisors (7406737341).

22220212011 is an equidigital number, since it uses as much as digits as its factorization.

22220212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406737340.

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

Adding to 22220212011 its reverse (11021202222), we get a palindrome (33241414233).

The spelling of 22220212011 in words is "twenty-two billion, two hundred twenty million, two hundred twelve thousand, eleven".