12212212220001 has 48 divisors (see below), whose sum is σ = 18637076390400. Its totient is φ = 7684450228224.

The previous prime is 12212212219979. The next prime is 12212212220041. The reversal of 12212212220001 is 10002221221221.

It is a happy number.

12212212220001 is a `hidden beast` number, since 1 + 221 + 221 + 2 + 220 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 12212212220001 - 2¹³ = 12212212211809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212212220041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50099920 + ... + 50343086.

It is an arithmetic number, because the mean of its divisors is an integer number (388272424800).

Almost surely, 2^{12212212220001} is an apocalyptic number.

It is an amenable number.

12212212220001 is a deficient number, since it is larger than the sum of its proper divisors (6424864170399).

12212212220001 is a wasteful number, since it uses less digits than its factorization.

12212212220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244278 (or 244275 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12212212220001 its reverse (10002221221221), we get a palindrome (22214433441222).

The spelling of 12212212220001 in words is "twelve trillion, two hundred twelve billion, two hundred twelve million, two hundred twenty thousand, one".