1210204240100 has 18 divisors (see below), whose sum is σ = 2626143201234. Its totient is φ = 484081696000.

The previous prime is 1210204240081. The next prime is 1210204240103. The reversal of 1210204240100 is 10424020121.

It can be written as a sum of positive squares in 3 ways, for example, as 69033358564 + 1141170881536 = 262742^2 + 1068256^2 .

It is not an unprimeable number, because it can be changed into a prime (1210204240103) 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, 6051021101 + ... + 6051021300.

It is an arithmetic number, because the mean of its divisors is an integer number (145896844513).

Almost surely, 2^{1210204240100} is an apocalyptic number.

1210204240100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210204240100 is an abundant number, since it is smaller than the sum of its proper divisors (1415938961134).

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

1210204240100 is a wasteful number, since it uses less digits than its factorization.

1210204240100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102042415 (or 12102042408 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1210204240100 its reverse (10424020121), we get a palindrome (1220628260221).

The spelling of 1210204240100 in words is "one trillion, two hundred ten billion, two hundred four million, two hundred forty thousand, one hundred".