20091009100202 has 8 divisors (see below), whose sum is σ = 30218629492416. Its totient is φ = 10018132602732.

The previous prime is 20091009100177. The next prime is 20091009100243. The reversal of 20091009100202 is 20200190019002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×20091009100202⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13685972768 + ... + 13685974235.

It is an arithmetic number, because the mean of its divisors is an integer number (3777328686552).

Almost surely, 2^{20091009100202} is an apocalyptic number.

20091009100202 is a deficient number, since it is larger than the sum of its proper divisors (10127620392214).

20091009100202 is a wasteful number, since it uses less digits than its factorization.

20091009100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27371947372.

The product of its (nonzero) digits is 648, while the sum is 26.

Adding to 20091009100202 its reverse (20200190019002), we get a palindrome (40291199119204).

The spelling of 20091009100202 in words is "twenty trillion, ninety-one billion, nine million, one hundred thousand, two hundred two".