1220102202221 has 8 divisors (see below), whose sum is σ = 1394943213120. Its totient is φ = 1045396365408.

The previous prime is 1220102202169. The next prime is 1220102202233. The reversal of 1220102202221 is 1222022010221.

It is a happy number.

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 1220102202221 - 2³⁸ = 945224295277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220102202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220102202271) 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, 33774176 + ... + 33810281.

It is an arithmetic number, because the mean of its divisors is an integer number (174367901640).

Almost surely, 2^{1220102202221} is an apocalyptic number.

It is an amenable number.

1220102202221 is a deficient number, since it is larger than the sum of its proper divisors (174841010899).

1220102202221 is an equidigital number, since it uses as much as digits as its factorization.

1220102202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67587043.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220102202221 its reverse (1222022010221), we get a palindrome (2442124212442).

The spelling of 1220102202221 in words is "one trillion, two hundred twenty billion, one hundred two million, two hundred two thousand, two hundred twenty-one".