1221011102219 has 8 divisors (see below), whose sum is σ = 1263196056720. Its totient is φ = 1178831556000.

The previous prime is 1221011102147. The next prime is 1221011102249. The reversal of 1221011102219 is 9122011101221.

It is a happy number.

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

It is not a de Polignac number, because 1221011102219 - 2⁸ = 1221011101963 is a prime.

It is a super-2 number, since 2×1221011102219² (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 = 1221011102194 and 1221011102203.

It is not an unprimeable number, because it can be changed into a prime (1221011102249) 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, 890057 + ... + 1798394.

It is an arithmetic number, because the mean of its divisors is an integer number (157899507090).

Almost surely, 2^{1221011102219} is an apocalyptic number.

1221011102219 is a deficient number, since it is larger than the sum of its proper divisors (42184954501).

1221011102219 is a wasteful number, since it uses less digits than its factorization.

1221011102219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704141.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1221011102219 in words is "one trillion, two hundred twenty-one billion, eleven million, one hundred two thousand, two hundred nineteen".