23203211221212 has 48 divisors (see below), whose sum is σ = 60436271102592. Its totient is φ = 6867758076480.

The previous prime is 23203211221171. The next prime is 23203211221213. The reversal of 23203211221212 is 21212211230232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203211221213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2043969943 + ... + 2043981294.

It is an arithmetic number, because the mean of its divisors is an integer number (1259088981304).

Almost surely, 2^{23203211221212} is an apocalyptic number.

23203211221212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23203211221212 is an abundant number, since it is smaller than the sum of its proper divisors (37233059881380).

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

23203211221212 is a wasteful number, since it uses less digits than its factorization.

23203211221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087951298 (or 4087951296 counting only the distinct ones).

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

Adding to 23203211221212 its reverse (21212211230232), we get a palindrome (44415422451444).

The spelling of 23203211221212 in words is "twenty-three trillion, two hundred three billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twelve".