1201110021121 has 8 divisors (see below), whose sum is σ = 1218393187200. Its totient is φ = 1183837025280.

The previous prime is 1201110021107. The next prime is 1201110021179. The reversal of 1201110021121 is 1211200111021.

It is a happy number.

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 1201110021121 - 2⁹ = 1201110020609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201110021191) 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, 2304501 + ... + 2777218.

It is an arithmetic number, because the mean of its divisors is an integer number (152299148400).

Almost surely, 2^{1201110021121} is an apocalyptic number.

It is an amenable number.

1201110021121 is a deficient number, since it is larger than the sum of its proper divisors (17283166079).

1201110021121 is an equidigital number, since it uses as much as digits as its factorization.

1201110021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085119.

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

Adding to 1201110021121 its reverse (1211200111021), we get a palindrome (2412310132142).

The spelling of 1201110021121 in words is "one trillion, two hundred one billion, one hundred ten million, twenty-one thousand, one hundred twenty-one".