1001221022111 has 8 divisors (see below), whose sum is σ = 1055152423920. Its totient is φ = 947413176192.

The previous prime is 1001221022069. The next prime is 1001221022159. The reversal of 1001221022111 is 1112201221001.

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 1001221022111 - 2⁶ = 1001221022047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001221027111) 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, 30872330 + ... + 30904743.

It is an arithmetic number, because the mean of its divisors is an integer number (131894052990).

Almost surely, 2^{1001221022111} is an apocalyptic number.

1001221022111 is a deficient number, since it is larger than the sum of its proper divisors (53931401809).

1001221022111 is an equidigital number, since it uses as much as digits as its factorization.

1001221022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61777945.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001221022111 its reverse (1112201221001), we get a palindrome (2113422243112).

The spelling of 1001221022111 in words is "one trillion, one billion, two hundred twenty-one million, twenty-two thousand, one hundred eleven".