20111212001120 has 48 divisors (see below), whose sum is σ = 47521166222880. Its totient is φ = 8043057859584.

The previous prime is 20111212001107. The next prime is 20111212001123. The reversal of 20111212001120 is 2110021211102.

It is a super-2 number, since 2×20111212001120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111212001095 and 20111212001104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111212001123) 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, 10242917 + ... + 12047396.

It is an arithmetic number, because the mean of its divisors is an integer number (990024296310).

Almost surely, 2^{20111212001120} is an apocalyptic number.

20111212001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111212001120 is an abundant number, since it is smaller than the sum of its proper divisors (27409954221760).

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

20111212001120 is a wasteful number, since it uses less digits than its factorization.

20111212001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22295967 (or 22295959 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20111212001120 its reverse (2110021211102), we get a palindrome (22221233212222).

The spelling of 20111212001120 in words is "twenty trillion, one hundred eleven billion, two hundred twelve million, one thousand, one hundred twenty".