110021021001 has 12 divisors (see below), whose sum is σ = 158923011312. Its totient is φ = 73345612536.

The previous prime is 110021020999. The next prime is 110021021009. The reversal of 110021021001 is 100120120011.

It is a happy number.

It is not a de Polignac number, because 110021021001 - 2¹ = 110021020999 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (110021021009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343990 + ... + 581696.

It is an arithmetic number, because the mean of its divisors is an integer number (13243584276).

Almost surely, 2^110021021001 is an apocalyptic number.

It is an amenable number.

110021021001 is a deficient number, since it is larger than the sum of its proper divisors (48901990311).

110021021001 is a wasteful number, since it uses less digits than its factorization.

110021021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289140 (or 289137 counting only the distinct ones).

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

Adding to 110021021001 its reverse (100120120011), we get a palindrome (210141141012).

It can be divided in two parts, 1100210 and 21001, that added together give a palindrome (1121211).

The spelling of 110021021001 in words is "one hundred ten billion, twenty-one million, twenty-one thousand, one".