11220111022101 has 4 divisors (see below), whose sum is σ = 14960148029472. Its totient is φ = 7480074014732.

The previous prime is 11220111022097. The next prime is 11220111022139. The reversal of 11220111022101 is 10122011102211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220111022101 - 2² = 11220111022097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220111022151) 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, 1870018503681 + ... + 1870018503686.

It is an arithmetic number, because the mean of its divisors is an integer number (3740037007368).

Almost surely, 2^{11220111022101} is an apocalyptic number.

It is an amenable number.

11220111022101 is a deficient number, since it is larger than the sum of its proper divisors (3740037007371).

11220111022101 is an equidigital number, since it uses as much as digits as its factorization.

11220111022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740037007370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11220111022101 its reverse (10122011102211), we get a palindrome (21342122124312).

It can be divided in two parts, 1122011102210 and 1, that added together give a palindrome (1122011102211).

The spelling of 11220111022101 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, twenty-two thousand, one hundred one".