1209120200910 has 24 divisors (see below), whose sum is σ = 3143712522600. Its totient is φ = 322432053552.

The previous prime is 1209120200903. The next prime is 1209120200927. The reversal of 1209120200910 is 190020219021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6717334360 + ... + 6717334539.

It is an arithmetic number, because the mean of its divisors is an integer number (130988021775).

Almost surely, 2^{1209120200910} is an apocalyptic number.

1209120200910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1209120200910 is an abundant number, since it is smaller than the sum of its proper divisors (1934592321690).

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

1209120200910 is a wasteful number, since it uses less digits than its factorization.

1209120200910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13434668912 (or 13434668909 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

Adding to 1209120200910 its reverse (190020219021), we get a palindrome (1399140419931).

The spelling of 1209120200910 in words is "one trillion, two hundred nine billion, one hundred twenty million, two hundred thousand, nine hundred ten".