20001011221202 has 16 divisors (see below), whose sum is σ = 32856277374432. Its totient is φ = 9055993758720.

The previous prime is 20001011221193. The next prime is 20001011221207. The reversal of 20001011221202 is 20212211010002.

It is not an unprimeable number, because it can be changed into a prime (20001011221207) by changing a digit.

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, 1768743128 + ... + 1768754435.

It is an arithmetic number, because the mean of its divisors is an integer number (2053517335902).

Almost surely, 2^{20001011221202} is an apocalyptic number.

20001011221202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20001011221202 is a deficient number, since it is larger than the sum of its proper divisors (12855266153230).

20001011221202 is a wasteful number, since it uses less digits than its factorization.

20001011221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537497833.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001011221202 its reverse (20212211010002), we get a palindrome (40213222231204).

The spelling of 20001011221202 in words is "twenty trillion, one billion, eleven million, two hundred twenty-one thousand, two hundred two".