20011222002 has 64 divisors (see below), whose sum is σ = 43927401600. Its totient is φ = 6049182720.

The previous prime is 20011221983. The next prime is 20011222003. The reversal of 20011222002 is 20022211002.

It is not an unprimeable number, because it can be changed into a prime (20011222003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1498977 + ... + 1512267.

It is an arithmetic number, because the mean of its divisors is an integer number (686365650).

Almost surely, 2^20011222002 is an apocalyptic number.

20011222002 is an abundant number, since it is smaller than the sum of its proper divisors (23916179598).

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

20011222002 is a wasteful number, since it uses less digits than its factorization.

20011222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13851.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20011222002 its reverse (20022211002), we get a palindrome (40033433004).

The spelling of 20011222002 in words is "twenty billion, eleven million, two hundred twenty-two thousand, two".