100021221093 has 16 divisors (see below), whose sum is σ = 137676171776. Its totient is φ = 64523934720.

The previous prime is 100021221077. The next prime is 100021221119. The reversal of 100021221093 is 390122120001.

It is not a de Polignac number, because 100021221093 - 2⁴ = 100021221077 is a prime.

It is a super-2 number, since 2×100021221093² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021221493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126905 + ... + 1212417.

It is an arithmetic number, because the mean of its divisors is an integer number (8604760736).

Almost surely, 2^100021221093 is an apocalyptic number.

It is an amenable number.

100021221093 is a deficient number, since it is larger than the sum of its proper divisors (37654950683).

100021221093 is a wasteful number, since it uses less digits than its factorization.

100021221093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98124.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 100021221093 its reverse (390122120001), we get a palindrome (490143341094).

The spelling of 100021221093 in words is "one hundred billion, twenty-one million, two hundred twenty-one thousand, ninety-three".