20011122221002 has 32 divisors (see below), whose sum is σ = 32971117392000. Its totient is φ = 9033307339200.

The previous prime is 20011122220997. The next prime is 20011122221021. The reversal of 20011122221002 is 20012222111002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17943352 + ... + 19025932.

It is an arithmetic number, because the mean of its divisors is an integer number (1030347418500).

Almost surely, 2^{20011122221002} is an apocalyptic number.

20011122221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20011122221002 is a deficient number, since it is larger than the sum of its proper divisors (12959995170998).

20011122221002 is a wasteful number, since it uses less digits than its factorization.

20011122221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088382.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20011122221002 its reverse (20012222111002), we get a palindrome (40023344332004).

The spelling of 20011122221002 in words is "twenty trillion, eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two".