1222402042221 has 32 divisors (see below), whose sum is σ = 1682607022080. Its totient is φ = 788799974976.

The previous prime is 1222402042193. The next prime is 1222402042241.

1222402042221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222402042221 - 2⁹ = 1222402041709 is a prime.

It is a super-2 number, since 2×1222402042221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222402042191 and 1222402042200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222402042241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33418140 + ... + 33454698.

It is an arithmetic number, because the mean of its divisors is an integer number (52581469440).

Almost surely, 2^{1222402042221} is an apocalyptic number.

It is an amenable number.

1222402042221 is a deficient number, since it is larger than the sum of its proper divisors (460204979859).

1222402042221 is a wasteful number, since it uses less digits than its factorization.

1222402042221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38153.

The product of its (nonzero) digits is 2048, while the sum is 24.

The spelling of 1222402042221 in words is "one trillion, two hundred twenty-two billion, four hundred two million, forty-two thousand, two hundred twenty-one".