1202112201001 has 4 divisors (see below), whose sum is σ = 1202122580932. Its totient is φ = 1202101821072.

The previous prime is 1202112200921. The next prime is 1202112201049. The reversal of 1202112201001 is 1001022112021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1039021416976 + 163090784025 = 1019324^2 + 403845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202112201001 - 2²⁵ = 1202078646569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202112201061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5014266 + ... + 5248531.

It is an arithmetic number, because the mean of its divisors is an integer number (300530645233).

Almost surely, 2^{1202112201001} is an apocalyptic number.

It is an amenable number.

1202112201001 is a deficient number, since it is larger than the sum of its proper divisors (10379931).

1202112201001 is a wasteful number, since it uses less digits than its factorization.

1202112201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10379930.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1202112201001 its reverse (1001022112021), we get a palindrome (2203134313022).

The spelling of 1202112201001 in words is "one trillion, two hundred two billion, one hundred twelve million, two hundred one thousand, one".