20100001221190 has 64 divisors (see below), whose sum is σ = 39541605345792. Its totient is φ = 7295675564800.

The previous prime is 20100001221121. The next prime is 20100001221191. The reversal of 20100001221190 is 9112210000102.

It is a happy number.

It is a super-2 number, since 2×20100001221190² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100001221191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131819634 + ... + 131972026.

It is an arithmetic number, because the mean of its divisors is an integer number (617837583528).

Almost surely, 2^{20100001221190} is an apocalyptic number.

20100001221190 is a deficient number, since it is larger than the sum of its proper divisors (19441604124602).

20100001221190 is a wasteful number, since it uses less digits than its factorization.

20100001221190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154605.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 20100001221190 its reverse (9112210000102), we get a palindrome (29212211221292).

The spelling of 20100001221190 in words is "twenty trillion, one hundred billion, one million, two hundred twenty-one thousand, one hundred ninety".