100220021001 has 24 divisors (see below), whose sum is σ = 153377377920. Its totient is φ = 62842248576.

The previous prime is 100220020963. The next prime is 100220021023. The reversal of 100220021001 is 100120022001.

It is not a de Polignac number, because 100220021001 - 2¹⁷ = 100219889929 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 (100220021051) 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, 23820 + ... + 448338.

It is an arithmetic number, because the mean of its divisors is an integer number (6390724080).

Almost surely, 2^100220021001 is an apocalyptic number.

It is an amenable number.

100220021001 is a deficient number, since it is larger than the sum of its proper divisors (53157356919).

100220021001 is a wasteful number, since it uses less digits than its factorization.

100220021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426085 (or 426082 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100220021001 its reverse (100120022001), we get a palindrome (200340043002).

It can be divided in two parts, 1002200 and 21001, that added together give a palindrome (1023201).

The spelling of 100220021001 in words is "one hundred billion, two hundred twenty million, twenty-one thousand, one".