20111223232230 has 32 divisors (see below), whose sum is σ = 51979776970464. Its totient is φ = 4950454949376.

The previous prime is 20111223232211. The next prime is 20111223232279. The reversal of 20111223232230 is 3223232211102.

It is a super-2 number, since 2×20111223232230² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20111223232230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25783619139 + ... + 25783619918.

It is an arithmetic number, because the mean of its divisors is an integer number (1624368030327).

Almost surely, 2^{20111223232230} is an apocalyptic number.

20111223232230 is an abundant number, since it is smaller than the sum of its proper divisors (31868553738234).

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

20111223232230 is a wasteful number, since it uses less digits than its factorization.

20111223232230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51567239080.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20111223232230 its reverse (3223232211102), we get a palindrome (23334455443332).

The spelling of 20111223232230 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred thirty".