111121001220201 has 8 divisors (see below), whose sum is σ = 169327239954624. Its totient is φ = 63497714982960.

The previous prime is 111121001220193. The next prime is 111121001220209. The reversal of 111121001220201 is 102022100121111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111121001220193) and next prime (111121001220209).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111121001220201 - 2³ = 111121001220193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121001220209) 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, 2645738124270 + ... + 2645738124311.

It is an arithmetic number, because the mean of its divisors is an integer number (21165904994328).

Almost surely, 2^{111121001220201} is an apocalyptic number.

It is an amenable number.

111121001220201 is a deficient number, since it is larger than the sum of its proper divisors (58206238734423).

111121001220201 is an equidigital number, since it uses as much as digits as its factorization.

111121001220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291476248591.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111121001220201 its reverse (102022100121111), we get a palindrome (213143101341312).

The spelling of 111121001220201 in words is "one hundred eleven trillion, one hundred twenty-one billion, one million, two hundred twenty thousand, two hundred one".