20122002222 has 64 divisors (see below), whose sum is σ = 47778812928. Its totient is φ = 5529888000.

The previous prime is 20122002143. The next prime is 20122002239. The reversal of 20122002222 is 22220022102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39972 + ... + 204552.

It is an arithmetic number, because the mean of its divisors is an integer number (746543952).

Almost surely, 2^20122002222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122002222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23889406464).

20122002222 is an abundant number, since it is smaller than the sum of its proper divisors (27656810706).

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

20122002222 is a wasteful number, since it uses less digits than its factorization.

20122002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164705.

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

Adding to 20122002222 its reverse (22220022102), we get a palindrome (42342024324).

The spelling of 20122002222 in words is "twenty billion, one hundred twenty-two million, two thousand, two hundred twenty-two".