20001111121122 has 16 divisors (see below), whose sum is σ = 40007664069312. Its totient is φ = 6666130069200.

The previous prime is 20001111121097. The next prime is 20001111121141. The reversal of 20001111121122 is 22112111110002.

It is a happy number.

It is a super-3 number, since 3×20001111121122³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226695013 + ... + 226783224.

It is an arithmetic number, because the mean of its divisors is an integer number (2500479004332).

Almost surely, 2^{20001111121122} is an apocalyptic number.

20001111121122 is an abundant number, since it is smaller than the sum of its proper divisors (20006552948190).

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

20001111121122 is a wasteful number, since it uses less digits than its factorization.

20001111121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453485593.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20001111121122 its reverse (22112111110002), we get a palindrome (42113222231124).

The spelling of 20001111121122 in words is "twenty trillion, one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".