20001122111262 has 16 divisors (see below), whose sum is σ = 40005575943552. Its totient is φ = 6666485416920.

The previous prime is 20001122111237. The next prime is 20001122111263. The reversal of 20001122111262 is 26211122110002.

It is a super-2 number, since 2×20001122111262² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001122111263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138743664 + ... + 138887747.

It is an arithmetic number, because the mean of its divisors is an integer number (2500348496472).

Almost surely, 2^{20001122111262} is an apocalyptic number.

20001122111262 is an abundant number, since it is smaller than the sum of its proper divisors (20004453832290).

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

20001122111262 is a wasteful number, since it uses less digits than its factorization.

20001122111262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277643423.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 20001122111262 its reverse (26211122110002), we get a palindrome (46212244221264).

The spelling of 20001122111262 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred sixty-two".