1201001112021 has 16 divisors (see below), whose sum is σ = 1657704614400. Its totient is φ = 772520887488.

The previous prime is 1201001112007. The next prime is 1201001112041. The reversal of 1201001112021 is 1202111001021.

It is not a de Polignac number, because 1201001112021 - 2¹⁰ = 1201001110997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201001111988 and 1201001112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201001112041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4671406 + ... + 4921791.

It is an arithmetic number, because the mean of its divisors is an integer number (103606538400).

Almost surely, 2^{1201001112021} is an apocalyptic number.

It is an amenable number.

1201001112021 is a deficient number, since it is larger than the sum of its proper divisors (456703502379).

1201001112021 is a wasteful number, since it uses less digits than its factorization.

1201001112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594668.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201001112021 its reverse (1202111001021), we get a palindrome (2403112113042).

The spelling of 1201001112021 in words is "one trillion, two hundred one billion, one million, one hundred twelve thousand, twenty-one".