11020120101 has 6 divisors (see below), whose sum is σ = 15917951270.
Its totient is φ = 7346746728.
The previous prime is 11020120093. The next prime is 11020120129. The reversal of 11020120101 is 10102102011.
Adding to 11020120101 its reverse (10102102011), we get a palindrome (21122222112).
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 9134389476 + 1885730625 = 95574^2 + 43425^2
It is not a de Polignac number, because 11020120101 - 23 = 11020120093 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1224457789 = 11020120101 / (1 + 1 + 0 + 2 + 0 + 1 + 2 + 0 + 1 + 0 + 1).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11020120141) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 612228886 + ... + 612228903.
Almost surely, 211020120101 is an apocalyptic number.
It is an amenable number.
11020120101 is a deficient number, since it is larger than the sum of its proper divisors (4897831169).
11020120101 is a wasteful number, since it uses less digits than its factorization.
11020120101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1224457795 (or 1224457792 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
The spelling of 11020120101 in words is "eleven billion, twenty million, one hundred twenty thousand, one hundred one".