22001212212132 has 96 divisors (see below), whose sum is σ = 53069971046400. Its totient is φ = 7086749356800.

The previous prime is 22001212212131. The next prime is 22001212212149. The reversal of 22001212212132 is 23121221210022.

It is a junction number, because it is equal to n+sod(n) for n = 22001212212099 and 22001212212108.

It is not an unprimeable number, because it can be changed into a prime (22001212212131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2389094344 + ... + 2389103552.

It is an arithmetic number, because the mean of its divisors is an integer number (552812198400).

Almost surely, 2^{22001212212132} is an apocalyptic number.

It is an amenable number.

22001212212132 is an abundant number, since it is smaller than the sum of its proper divisors (31068758834268).

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

22001212212132 is a wasteful number, since it uses less digits than its factorization.

22001212212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17977 (or 17975 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22001212212132 its reverse (23121221210022), we get a palindrome (45122433422154).

The spelling of 22001212212132 in words is "twenty-two trillion, one billion, two hundred twelve million, two hundred twelve thousand, one hundred thirty-two".