11021201211 has 8 divisors (see below), whose sum is σ = 15092095504. Its totient is φ = 7148887200.

The previous prime is 11021201197. The next prime is 11021201281. The reversal of 11021201211 is 11210212011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11021201211 - 2⁵ = 11021201179 is a prime.

It is a super-2 number, since 2×11021201211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021201281) 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, 49644940 + ... + 49645161.

It is an arithmetic number, because the mean of its divisors is an integer number (1886511938).

Almost surely, 2^11021201211 is an apocalyptic number.

11021201211 is a deficient number, since it is larger than the sum of its proper divisors (4070894293).

11021201211 is an equidigital number, since it uses as much as digits as its factorization.

11021201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99290141.

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

Adding to 11021201211 its reverse (11210212011), we get a palindrome (22231413222).

The spelling of 11021201211 in words is "eleven billion, twenty-one million, two hundred one thousand, two hundred eleven".