1011202111211 has 4 divisors (see below), whose sum is σ = 1011204162624. Its totient is φ = 1011200059800.

The previous prime is 1011202111151. The next prime is 1011202111253. The reversal of 1011202111211 is 1121112021101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011202111211 - 2¹⁰ = 1011202110187 is a prime.

It is a super-2 number, since 2×1011202111211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011202111111) 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, 209606 + ... + 1437476.

It is an arithmetic number, because the mean of its divisors is an integer number (252801040656).

Almost surely, 2^{1011202111211} is an apocalyptic number.

1011202111211 is a deficient number, since it is larger than the sum of its proper divisors (2051413).

1011202111211 is an equidigital number, since it uses as much as digits as its factorization.

1011202111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051412.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1011202111211 its reverse (1121112021101), we get a palindrome (2132314132312).

The spelling of 1011202111211 in words is "one trillion, eleven billion, two hundred two million, one hundred eleven thousand, two hundred eleven".