2231061164020 has 24 divisors (see below), whose sum is σ = 5045630633064. Its totient is φ = 823776429696.

The previous prime is 2231061163963. The next prime is 2231061164071. The reversal of 2231061164020 is 204611601322.

It can be written as a sum of positive squares in 4 ways, for example, as 338626231056 + 1892434932964 = 581916^2 + 1375658^2 .

It is a super-3 number, since 3×2231061164020³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231061164020.

It is a congruent number.

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, 4290501979 + ... + 4290502498.

It is an arithmetic number, because the mean of its divisors is an integer number (210234609711).

Almost surely, 2^{2231061164020} is an apocalyptic number.

2231061164020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231061164020 is an abundant number, since it is smaller than the sum of its proper divisors (2814569469044).

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

2231061164020 is a wasteful number, since it uses less digits than its factorization.

2231061164020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581004499 (or 8581004497 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 2231061164020 its reverse (204611601322), we get a palindrome (2435672765342).

The spelling of 2231061164020 in words is "two trillion, two hundred thirty-one billion, sixty-one million, one hundred sixty-four thousand, twenty".