20113212212660 has 48 divisors (see below), whose sum is σ = 48272001684480. Its totient is φ = 6895916705280.

The previous prime is 20113212212641. The next prime is 20113212212713. The reversal of 20113212212660 is 6621221231102.

It is a super-2 number, since 2×20113212212660² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30681596 + ... + 31330284.

It is an arithmetic number, because the mean of its divisors is an integer number (1005666701760).

Almost surely, 2^{20113212212660} is an apocalyptic number.

20113212212660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113212212660 is an abundant number, since it is smaller than the sum of its proper divisors (28158789471820).

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

20113212212660 is a wasteful number, since it uses less digits than its factorization.

20113212212660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870176 (or 870174 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 20113212212660 its reverse (6621221231102), we get a palindrome (26734433443762).

The spelling of 20113212212660 in words is "twenty trillion, one hundred thirteen billion, two hundred twelve million, two hundred twelve thousand, six hundred sixty".