1221001333330 has 16 divisors (see below), whose sum is σ = 2313476210880. Its totient is φ = 462695242032.

The previous prime is 1221001333319. The next prime is 1221001333351. The reversal of 1221001333330 is 333331001221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213161214 + ... + 3213161593.

It is an arithmetic number, because the mean of its divisors is an integer number (144592263180).

Almost surely, 2^{1221001333330} is an apocalyptic number.

1221001333330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221001333330 is a deficient number, since it is larger than the sum of its proper divisors (1092474877550).

1221001333330 is a wasteful number, since it uses less digits than its factorization.

1221001333330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426322833.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 1221001333330 its reverse (333331001221), we get a palindrome (1554332334551).

The spelling of 1221001333330 in words is "one trillion, two hundred twenty-one billion, one million, three hundred thirty-three thousand, three hundred thirty".