11211222201101 has 4 divisors (see below), whose sum is σ = 12073623908892. Its totient is φ = 10348820493312.

The previous prime is 11211222201043. The next prime is 11211222201131. The reversal of 11211222201101 is 10110222211211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5989037457001 + 5222184744100 = 2447251^2 + 2285210^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211222201101 - 2³⁴ = 11194042331917 is a prime.

It is a super-2 number, since 2×11211222201101² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11211222201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211222201131) 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, 431200853876 + ... + 431200853901.

It is an arithmetic number, because the mean of its divisors is an integer number (3018405977223).

Almost surely, 2^{11211222201101} is an apocalyptic number.

It is an amenable number.

11211222201101 is a deficient number, since it is larger than the sum of its proper divisors (862401707791).

11211222201101 is an equidigital number, since it uses as much as digits as its factorization.

11211222201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862401707790.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211222201101 its reverse (10110222211211), we get a palindrome (21321444412312).

The spelling of 11211222201101 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, two hundred one thousand, one hundred one".