20012212222222 has 16 divisors (see below), whose sum is σ = 32757176887344. Its totient is φ = 9093704400000.

The previous prime is 20012212222201. The next prime is 20012212222229. The reversal of 20012212222222 is 22222221221002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20012212222193 and 20012212222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012212222229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137710779 + ... + 137856022.

It is an arithmetic number, because the mean of its divisors is an integer number (2047323555459).

Almost surely, 2^{20012212222222} is an apocalyptic number.

20012212222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012212222222 is a deficient number, since it is larger than the sum of its proper divisors (12744964665122).

20012212222222 is a wasteful number, since it uses less digits than its factorization.

20012212222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275570115.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20012212222222 its reverse (22222221221002), we get a palindrome (42234433443224).

The spelling of 20012212222222 in words is "twenty trillion, twelve billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".