1201100021211 has 4 divisors (see below), whose sum is σ = 1601466694952. Its totient is φ = 800733347472.

The previous prime is 1201100021171. The next prime is 1201100021213. The reversal of 1201100021211 is 1121200011021.

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

It is not a de Polignac number, because 1201100021211 - 2¹⁴ = 1201100004827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201100021213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200183336866 + ... + 200183336871.

It is an arithmetic number, because the mean of its divisors is an integer number (400366673738).

Almost surely, 2^{1201100021211} is an apocalyptic number.

1201100021211 is a deficient number, since it is larger than the sum of its proper divisors (400366673741).

1201100021211 is an equidigital number, since it uses as much as digits as its factorization.

1201100021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400366673740.

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

Adding to 1201100021211 its reverse (1121200011021), we get a palindrome (2322300032232).

The spelling of 1201100021211 in words is "one trillion, two hundred one billion, one hundred million, twenty-one thousand, two hundred eleven".