1210201110100 has 18 divisors (see below), whose sum is σ = 2626136409134. Its totient is φ = 484080444000.

The previous prime is 1210201110061. The next prime is 1210201110101. The reversal of 1210201110100 is 10111020121.

It can be written as a sum of positive squares in 3 ways, for example, as 13811420484 + 1196389689616 = 117522^2 + 1093796^2 .

It is a super-3 number, since 3×1210201110100³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210201110101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6051005451 + ... + 6051005650.

Almost surely, 2^{1210201110100} is an apocalyptic number.

1210201110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210201110100 is an abundant number, since it is smaller than the sum of its proper divisors (1415935299034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210201110100 is a wasteful number, since it uses less digits than its factorization.

1210201110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12102011115 (or 12102011108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1210201110100 its reverse (10111020121), we get a palindrome (1220312130221).

The spelling of 1210201110100 in words is "one trillion, two hundred ten billion, two hundred one million, one hundred ten thousand, one hundred".