1111121221201 has 8 divisors (see below), whose sum is σ = 1149454800000. Its totient is φ = 1072788912720.

The previous prime is 1111121221169. The next prime is 1111121221241. The reversal of 1111121221201 is 1021221211111.

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 1111121221201 - 2⁵ = 1111121221169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111121221241) 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, 1673656 + ... + 2241286.

It is an arithmetic number, because the mean of its divisors is an integer number (143681850000).

Almost surely, 2^{1111121221201} is an apocalyptic number.

It is an amenable number.

1111121221201 is a deficient number, since it is larger than the sum of its proper divisors (38333578799).

1111121221201 is an equidigital number, since it uses as much as digits as its factorization.

1111121221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635159.

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

Adding to 1111121221201 its reverse (1021221211111), we get a palindrome (2132342432312).

The spelling of 1111121221201 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred one".