1202001101001 has 12 divisors (see below), whose sum is σ = 1736269171312. Its totient is φ = 801313132536.

The previous prime is 1202001100987. The next prime is 1202001101027. The reversal of 1202001101001 is 1001011002021.

It is a happy number.

It is not a de Polignac number, because 1202001101001 - 2⁵ = 1202001100969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1202001101071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1376851 + ... + 2073576.

Almost surely, 2^{1202001101001} is an apocalyptic number.

It is an amenable number.

1202001101001 is a deficient number, since it is larger than the sum of its proper divisors (534268070311).

1202001101001 is a wasteful number, since it uses less digits than its factorization.

1202001101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489140 (or 3489137 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1202001101001 its reverse (1001011002021), we get a palindrome (2203012103022).

The spelling of 1202001101001 in words is "one trillion, two hundred two billion, one million, one hundred one thousand, one".