1011221111201 has 16 divisors (see below), whose sum is σ = 1165485788928. Its totient is φ = 859428792000.

The previous prime is 1011221111189. The next prime is 1011221111221. The reversal of 1011221111201 is 1021111221101.

It is a cyclic number.

It is not a de Polignac number, because 1011221111201 - 2¹⁸ = 1011220849057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011221111221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312350 + ... + 1456023.

It is an arithmetic number, because the mean of its divisors is an integer number (72842861808).

Almost surely, 2^{1011221111201} is an apocalyptic number.

It is an amenable number.

1011221111201 is a deficient number, since it is larger than the sum of its proper divisors (154264677727).

1011221111201 is a wasteful number, since it uses less digits than its factorization.

1011221111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769072.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1011221111201 its reverse (1021111221101), we get a palindrome (2032332332302).

The spelling of 1011221111201 in words is "one trillion, eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".