20022312222 has 48 divisors (see below), whose sum is σ = 49383105408. Its totient is φ = 5803567440.

The previous prime is 20022312197. The next prime is 20022312223. The reversal of 20022312222 is 22221322002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20022312195 and 20022312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022312223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2193768 + ... + 2202875.

It is an arithmetic number, because the mean of its divisors is an integer number (1028814696).

Almost surely, 2^20022312222 is an apocalyptic number.

20022312222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20022312222 is an abundant number, since it is smaller than the sum of its proper divisors (29360793186).

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

20022312222 is a wasteful number, since it uses less digits than its factorization.

20022312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396685 (or 4396682 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20022312222 its reverse (22221322002), we get a palindrome (42243634224).

The spelling of 20022312222 in words is "twenty billion, twenty-two million, three hundred twelve thousand, two hundred twenty-two".