11021200101 has 24 divisors (see below), whose sum is σ = 16533518040. Its totient is φ = 7068542976.

The previous prime is 11021200067. The next prime is 11021200103. The reversal of 11021200101 is 10100212011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5339809476 + 5681390625 = 73074^2 + 75375^2 .

It is not a de Polignac number, because 11021200101 - 2⁹ = 11021199589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021200103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156300 + ... + 215573.

It is an arithmetic number, because the mean of its divisors is an integer number (688896585).

Almost surely, 2^11021200101 is an apocalyptic number.

It is an amenable number.

11021200101 is a deficient number, since it is larger than the sum of its proper divisors (5512317939).

11021200101 is a wasteful number, since it uses less digits than its factorization.

11021200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372005 (or 372002 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11021200101 its reverse (10100212011), we get a palindrome (21121412112).

The spelling of 11021200101 in words is "eleven billion, twenty-one million, two hundred thousand, one hundred one".