1011012100200 has 96 divisors (see below), whose sum is σ = 3482375030400. Its totient is φ = 269603225280.

The previous prime is 1011012100181. The next prime is 1011012100207. The reversal of 1011012100200 is 20012101101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1011012100207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93606832 + ... + 93617631.

It is an arithmetic number, because the mean of its divisors is an integer number (36274739900).

Almost surely, 2^{1011012100200} is an apocalyptic number.

1011012100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011012100200 is an abundant number, since it is smaller than the sum of its proper divisors (2471362930200).

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

1011012100200 is a wasteful number, since it uses less digits than its factorization.

1011012100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187224488 (or 187224473 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1011012100200 its reverse (20012101101), we get a palindrome (1031024201301).

Subtracting from 1011012100200 its reverse (20012101101), we obtain a palindrome (990999999099).

The spelling of 1011012100200 in words is "one trillion, eleven billion, twelve million, one hundred thousand, two hundred".