1222011120021 has 4 divisors (see below), whose sum is σ = 1629348160032. Its totient is φ = 814674080012.

The previous prime is 1222011120017. The next prime is 1222011120067. The reversal of 1222011120021 is 1200211102221.

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 a cyclic number.

It is not a de Polignac number, because 1222011120021 - 2² = 1222011120017 is a prime.

It is a super-2 number, since 2×1222011120021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203668520001 + ... + 203668520006.

It is an arithmetic number, because the mean of its divisors is an integer number (407337040008).

Almost surely, 2^{1222011120021} is an apocalyptic number.

It is an amenable number.

1222011120021 is a deficient number, since it is larger than the sum of its proper divisors (407337040011).

1222011120021 is an equidigital number, since it uses as much as digits as its factorization.

1222011120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407337040010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1222011120021 its reverse (1200211102221), we get a palindrome (2422222222242).

The spelling of 1222011120021 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred twenty thousand, twenty-one".