1022111220221 has 8 divisors (see below), whose sum is σ = 1257983040384. Its totient is φ = 808703382960.

The previous prime is 1022111220199. The next prime is 1022111220241. The reversal of 1022111220221 is 1220221112201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022111220221 is a prime.

It is a super-2 number, since 2×1022111220221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022111220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022111220241) 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, 5615995625 + ... + 5615995806.

It is an arithmetic number, because the mean of its divisors is an integer number (157247880048).

Almost surely, 2^{1022111220221} is an apocalyptic number.

It is an amenable number.

1022111220221 is a deficient number, since it is larger than the sum of its proper divisors (235871820163).

1022111220221 is a wasteful number, since it uses less digits than its factorization.

1022111220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11231991451.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022111220221 its reverse (1220221112201), we get a palindrome (2242332332422).

The spelling of 1022111220221 in words is "one trillion, twenty-two billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty-one".