100021694 has 4 divisors (see below), whose sum is σ = 150032544. Its totient is φ = 50010846.

The previous prime is 100021679. The next prime is 100021699. The reversal of 100021694 is 496120001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25005422 + ... + 25005425.

It is an arithmetic number, because the mean of its divisors is an integer number (37508136).

Almost surely, 2^100021694 is an apocalyptic number.

100021694 is a deficient number, since it is larger than the sum of its proper divisors (50010850).

100021694 is an equidigital number, since it uses as much as digits as its factorization.

100021694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50010849.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 100021694 is about 10001.0846411777. The cubic root of 100021694 is about 464.1924458104.

Adding to 100021694 its reverse (496120001), we get a palindrome (596141695).

The spelling of 100021694 in words is "one hundred million, twenty-one thousand, six hundred ninety-four".