11122212122001 has 24 divisors (see below), whose sum is σ = 16764915188736. Its totient is φ = 7092001509120.

The previous prime is 11122212121991. The next prime is 11122212122027. The reversal of 11122212122001 is 10022121222111.

It is not a de Polignac number, because 11122212122001 - 2²² = 11122207927697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11122212122501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1887841 + ... + 5080193.

It is an arithmetic number, because the mean of its divisors is an integer number (698538132864).

Almost surely, 2^{11122212122001} is an apocalyptic number.

It is an amenable number.

11122212122001 is a deficient number, since it is larger than the sum of its proper divisors (5642703066735).

11122212122001 is a wasteful number, since it uses less digits than its factorization.

11122212122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209213 (or 3209210 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11122212122001 its reverse (10022121222111), we get a palindrome (21144333344112).

The spelling of 11122212122001 in words is "eleven trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, one".