111201002121001 has 8 divisors (see below), whose sum is σ = 119755856715264. Its totient is φ = 102646280577360.

The previous prime is 111201002120969. The next prime is 111201002121019. The reversal of 111201002121001 is 100121200102111.

It is a happy number.

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

It is not a de Polignac number, because 111201002121001 - 2⁵ = 111201002120969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201002121091) 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, 31523431 + ... + 34873036.

It is an arithmetic number, because the mean of its divisors is an integer number (14969482089408).

Almost surely, 2^{111201002121001} is an apocalyptic number.

It is an amenable number.

111201002121001 is a deficient number, since it is larger than the sum of its proper divisors (8554854594263).

111201002121001 is a wasteful number, since it uses less digits than its factorization.

111201002121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66525311.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111201002121001 its reverse (100121200102111), we get a palindrome (211322202223112).

The spelling of 111201002121001 in words is "one hundred eleven trillion, two hundred one billion, two million, one hundred twenty-one thousand, one".