1201112020100 has 18 divisors (see below), whose sum is σ = 2606413083834. Its totient is φ = 480444808000.

The previous prime is 1201112020081. The next prime is 1201112020183. The reversal of 1201112020100 is 10202111021.

It can be written as a sum of positive squares in 3 ways, for example, as 290236477696 + 910875542404 = 538736^2 + 954398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6005560001 + ... + 6005560200.

Almost surely, 2^{1201112020100} is an apocalyptic number.

1201112020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201112020100 is an abundant number, since it is smaller than the sum of its proper divisors (1405301063734).

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

1201112020100 is a wasteful number, since it uses less digits than its factorization.

1201112020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011120215 (or 12011120208 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201112020100 its reverse (10202111021), we get a palindrome (1211314131121).

The spelling of 1201112020100 in words is "one trillion, two hundred one billion, one hundred twelve million, twenty thousand, one hundred".