1222112002001 has 4 divisors (see below), whose sum is σ = 1333213093104. Its totient is φ = 1111010910900.

The previous prime is 1222112001989. The next prime is 1222112002031. The reversal of 1222112002001 is 1002002112221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1222112002001 - 2³⁰ = 1221038260177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222112002031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55550545535 + ... + 55550545556.

It is an arithmetic number, because the mean of its divisors is an integer number (333303273276).

Almost surely, 2^{1222112002001} is an apocalyptic number.

1222112002001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222112002001 is a deficient number, since it is larger than the sum of its proper divisors (111101091103).

1222112002001 is a wasteful number, since it uses less digits than its factorization.

1222112002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111101091102.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222112002001 its reverse (1002002112221), we get a palindrome (2224114114222).

It can be divided in two parts, 122211 and 2002001, that added together give a palindrome (2124212).

The spelling of 1222112002001 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, two thousand, one".