23201213212122 has 16 divisors (see below), whose sum is σ = 50620828826592. Its totient is φ = 7030670670320.

The previous prime is 23201213212117. The next prime is 23201213212123. The reversal of 23201213212122 is 22121231210232.

It is a junction number, because it is equal to n+sod(n) for n = 23201213212092 and 23201213212101.

It is not an unprimeable number, because it can be changed into a prime (23201213212123) 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, 175766766693 + ... + 175766766824.

It is an arithmetic number, because the mean of its divisors is an integer number (3163801801662).

Almost surely, 2^{23201213212122} is an apocalyptic number.

23201213212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23201213212122 is an abundant number, since it is smaller than the sum of its proper divisors (27419615614470).

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

23201213212122 is a wasteful number, since it uses less digits than its factorization.

23201213212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351533533533.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 23201213212122 its reverse (22121231210232), we get a palindrome (45322444422354).

The spelling of 23201213212122 in words is "twenty-three trillion, two hundred one billion, two hundred thirteen million, two hundred twelve thousand, one hundred twenty-two".