1221020221119 has 8 divisors (see below), whose sum is σ = 1628047364352. Its totient is φ = 814003279320.

The previous prime is 1221020221111. The next prime is 1221020221121. The reversal of 1221020221119 is 9111220201221.

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

It is not a de Polignac number, because 1221020221119 - 2³ = 1221020221111 is a prime.

It is a super-2 number, since 2×1221020221119² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221020221111) 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, 2266567 + ... + 2753064.

It is an arithmetic number, because the mean of its divisors is an integer number (203505920544).

Almost surely, 2^{1221020221119} is an apocalyptic number.

1221020221119 is a deficient number, since it is larger than the sum of its proper divisors (407027143233).

1221020221119 is an equidigital number, since it uses as much as digits as its factorization.

1221020221119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100717.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 1221020221119 in words is "one trillion, two hundred twenty-one billion, twenty million, two hundred twenty-one thousand, one hundred nineteen".