1211201202001 has 8 divisors (see below), whose sum is σ = 1384272714944. Its totient is φ = 1038140381520.

The previous prime is 1211201201953. The next prime is 1211201202007. The reversal of 1211201202001 is 1002021021121.

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 1211201202001 - 2⁹ = 1211201201489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211201202007) 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, 2428890 + ... + 2884771.

It is an arithmetic number, because the mean of its divisors is an integer number (173034089368).

Almost surely, 2^{1211201202001} is an apocalyptic number.

It is an amenable number.

1211201202001 is a deficient number, since it is larger than the sum of its proper divisors (173071512943).

1211201202001 is an equidigital number, since it uses as much as digits as its factorization.

1211201202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346231.

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

Adding to 1211201202001 its reverse (1002021021121), we get a palindrome (2213222223122).

The spelling of 1211201202001 in words is "one trillion, two hundred eleven billion, two hundred one million, two hundred two thousand, one".