1222101011221 has 8 divisors (see below), whose sum is σ = 1227466859904. Its totient is φ = 1216739896320.

The previous prime is 1222101011177. The next prime is 1222101011237. The reversal of 1222101011221 is 1221101012221.

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 1222101011221 - 2¹³ = 1222101003029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222101011195 and 1222101011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222101011251) 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 7 ways as a sum of consecutive naturals, for example, 665485 + ... + 1699138.

It is an arithmetic number, because the mean of its divisors is an integer number (153433357488).

Almost surely, 2^{1222101011221} is an apocalyptic number.

It is an amenable number.

1222101011221 is a deficient number, since it is larger than the sum of its proper divisors (5365848683).

1222101011221 is a wasteful number, since it uses less digits than its factorization.

1222101011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366891.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222101011221 its reverse (1221101012221), we get a palindrome (2443202023442).

The spelling of 1222101011221 in words is "one trillion, two hundred twenty-two billion, one hundred one million, eleven thousand, two hundred twenty-one".