1222001002221 has 16 divisors (see below), whose sum is σ = 1644876024000. Its totient is φ = 806902051968.

The previous prime is 1222001002169. The next prime is 1222001002253.

1222001002221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222001002221 - 2¹⁴ = 1222000985837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222001002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222001003221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235230 + ... + 1580928.

It is an arithmetic number, because the mean of its divisors is an integer number (102804751500).

Almost surely, 2^{1222001002221} is an apocalyptic number.

It is an amenable number.

1222001002221 is a deficient number, since it is larger than the sum of its proper divisors (422875021779).

1222001002221 is a wasteful number, since it uses less digits than its factorization.

1222001002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348588.

The product of its (nonzero) digits is 64, while the sum is 15.

The spelling of 1222001002221 in words is "one trillion, two hundred twenty-two billion, one million, two thousand, two hundred twenty-one".