1220220011001 has 8 divisors (see below), whose sum is σ = 1641357891360. Its totient is φ = 806281068992.

The previous prime is 1220220010981. The next prime is 1220220011047. The reversal of 1220220011001 is 1001100220221.

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 1220220011001 - 2²² = 1220215816697 is a prime.

It is a super-2 number, since 2×1220220011001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220220019001) 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, 1799734191 + ... + 1799734868.

It is an arithmetic number, because the mean of its divisors is an integer number (205169736420).

Almost surely, 2^{1220220011001} is an apocalyptic number.

It is an amenable number.

1220220011001 is a deficient number, since it is larger than the sum of its proper divisors (421137880359).

1220220011001 is a wasteful number, since it uses less digits than its factorization.

1220220011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599469175.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220220011001 its reverse (1001100220221), we get a palindrome (2221320231222).

The spelling of 1220220011001 in words is "one trillion, two hundred twenty billion, two hundred twenty million, eleven thousand, one".