20021112222002 has 32 divisors (see below), whose sum is σ = 31161864098304. Its totient is φ = 9637230153600.

The previous prime is 20021112221953. The next prime is 20021112222017. The reversal of 20021112222002 is 20022221112002.

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, 27810128 + ... + 28520964.

It is an arithmetic number, because the mean of its divisors is an integer number (973808253072).

Almost surely, 2^{20021112222002} is an apocalyptic number.

20021112222002 is a deficient number, since it is larger than the sum of its proper divisors (11140751876302).

20021112222002 is a wasteful number, since it uses less digits than its factorization.

20021112222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713234.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20021112222002 its reverse (20022221112002), we get a palindrome (40043333334004).

Subtracting 20021112222002 from its reverse (20022221112002), we obtain a square (1108890000 = 33300²).

The spelling of 20021112222002 in words is "twenty trillion, twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, two".