121111200020003 has 4 divisors (see below), whose sum is σ = 121357862342328. Its totient is φ = 120864537697680.

The previous prime is 121111200019981. The next prime is 121111200020009. The reversal of 121111200020003 is 300020002111121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121111200020003 - 2²⁴ = 121111183242787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121111200020003.

It is not an unprimeable number, because it can be changed into a prime (121111200020009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123331160426 + ... + 123331161407.

It is an arithmetic number, because the mean of its divisors is an integer number (30339465585582).

Almost surely, 2^{121111200020003} is an apocalyptic number.

121111200020003 is a deficient number, since it is larger than the sum of its proper divisors (246662322325).

121111200020003 is an equidigital number, since it uses as much as digits as its factorization.

121111200020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246662322324.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121111200020003 its reverse (300020002111121), we get a palindrome (421131202131124).

The spelling of 121111200020003 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred million, twenty thousand, three".