10221001101 has 24 divisors (see below), whose sum is σ = 15333098040. Its totient is φ = 6555326976.

The previous prime is 10221001097. The next prime is 10221001129. The reversal of 10221001101 is 10110012201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3437007876 + 6783993225 = 58626^2 + 82365^2 .

It is not a de Polignac number, because 10221001101 - 2² = 10221001097 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 (10221001601) 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, 142800 + ... + 202073.

It is an arithmetic number, because the mean of its divisors is an integer number (638879085).

Almost surely, 2^10221001101 is an apocalyptic number.

It is an amenable number.

10221001101 is a deficient number, since it is larger than the sum of its proper divisors (5112096939).

10221001101 is a wasteful number, since it uses less digits than its factorization.

10221001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345005 (or 345002 counting only the distinct ones).

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

Adding to 10221001101 its reverse (10110012201), we get a palindrome (20331013302).

It can be divided in two parts, 1022100 and 1101, that added together give a palindrome (1023201).

The spelling of 10221001101 in words is "ten billion, two hundred twenty-one million, one thousand, one hundred one".