1222202022221 has 8 divisors (see below), whose sum is σ = 1234388123904. Its totient is φ = 1210017589200.

The previous prime is 1222202022133. The next prime is 1222202022229.

1222202022221 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222202022221 - 2³⁰ = 1221128280397 is a prime.

It is a super-2 number, since 2×1222202022221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222202022193 and 1222202022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222202022229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081736 + ... + 1901198.

It is an arithmetic number, because the mean of its divisors is an integer number (154298515488).

Almost surely, 2^{1222202022221} is an apocalyptic number.

It is an amenable number.

1222202022221 is a deficient number, since it is larger than the sum of its proper divisors (12186101683).

1222202022221 is a wasteful number, since it uses less digits than its factorization.

1222202022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834331.

The product of its (nonzero) digits is 512, while the sum is 20.

The spelling of 1222202022221 in words is "one trillion, two hundred twenty-two billion, two hundred two million, twenty-two thousand, two hundred twenty-one".