23120011121212 has 24 divisors (see below), whose sum is σ = 40514521106304. Its totient is φ = 11544434459712.

The previous prime is 23120011121197. The next prime is 23120011121219. The reversal of 23120011121212 is 21212111002132.

It is a super-2 number, since 2×23120011121212² (a number of 28 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 23120011121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120011121219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157767318 + ... + 157913794.

It is an arithmetic number, because the mean of its divisors is an integer number (1688105046096).

Almost surely, 2^{23120011121212} is an apocalyptic number.

It is an amenable number.

23120011121212 is a deficient number, since it is larger than the sum of its proper divisors (17394509985092).

23120011121212 is a wasteful number, since it uses less digits than its factorization.

23120011121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199365 (or 199363 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 23120011121212 its reverse (21212111002132), we get a palindrome (44332122123344).

The spelling of 23120011121212 in words is "twenty-three trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, two hundred twelve".