11220420101 has 4 divisors (see below), whose sum is σ = 12240458304. Its totient is φ = 10200381900.

The previous prime is 11220420091. The next prime is 11220420109. The reversal of 11220420101 is 10102402211.

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 11220420101 - 2³⁰ = 10146678277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220420109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510019085 + ... + 510019106.

It is an arithmetic number, because the mean of its divisors is an integer number (3060114576).

Almost surely, 2^11220420101 is an apocalyptic number.

11220420101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220420101 is a deficient number, since it is larger than the sum of its proper divisors (1020038203).

11220420101 is a wasteful number, since it uses less digits than its factorization.

11220420101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020038202.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11220420101 its reverse (10102402211), we get a palindrome (21322822312).

The spelling of 11220420101 in words is "eleven billion, two hundred twenty million, four hundred twenty thousand, one hundred one".