20012220222 has 16 divisors (see below), whose sum is σ = 40378640400. Its totient is φ = 6611706752.

The previous prime is 20012220169. The next prime is 20012220251. The reversal of 20012220222 is 22202221002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14757597 + ... + 14758952.

It is an arithmetic number, because the mean of its divisors is an integer number (2523665025).

Almost surely, 2^20012220222 is an apocalyptic number.

20012220222 is an abundant number, since it is smaller than the sum of its proper divisors (20366420178).

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

20012220222 is a wasteful number, since it uses less digits than its factorization.

20012220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29516667.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20012220222 its reverse (22202221002), we get a palindrome (42214441224).

The spelling of 20012220222 in words is "twenty billion, twelve million, two hundred twenty thousand, two hundred twenty-two".