1201100012010 has 80 divisors (see below), whose sum is σ = 3232502814816. Its totient is φ = 320007881952.

The previous prime is 1201100012009. The next prime is 1201100012039. The reversal of 1201100012010 is 102100011021.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1201100011983 and 1201100012001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 249417 + ... + 1569843.

Almost surely, 2^{1201100012010} is an apocalyptic number.

1201100012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201100012010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616251407408).

1201100012010 is an abundant number, since it is smaller than the sum of its proper divisors (2031402802806).

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

1201100012010 is a wasteful number, since it uses less digits than its factorization.

1201100012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321569 (or 1321560 counting only the distinct ones).

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

Adding to 1201100012010 its reverse (102100011021), we get a palindrome (1303200023031).

The spelling of 1201100012010 in words is "one trillion, two hundred one billion, one hundred million, twelve thousand, ten".