20311220221202 has 16 divisors (see below), whose sum is σ = 30512192443200. Its totient is φ = 10140500443920.

The previous prime is 20311220221189. The next prime is 20311220221297. The reversal of 20311220221202 is 20212202211302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924449 + ... + 6440267.

It is an arithmetic number, because the mean of its divisors is an integer number (1907012027700).

Almost surely, 2^{20311220221202} is an apocalyptic number.

20311220221202 is a deficient number, since it is larger than the sum of its proper divisors (10200972221998).

20311220221202 is a wasteful number, since it uses less digits than its factorization.

20311220221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518561.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20311220221202 its reverse (20212202211302), we get a palindrome (40523422432504).

The spelling of 20311220221202 in words is "twenty trillion, three hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, two hundred two".