1011200010012 has 18 divisors (see below), whose sum is σ = 2556088914288. Its totient is φ = 337066669992.

The previous prime is 1011200009951. The next prime is 1011200010013. The reversal of 1011200010012 is 2100100021101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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 = 1011200009976 and 1011200010003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011200010013) 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, 14044444548 + ... + 14044444619.

Almost surely, 2^{1011200010012} is an apocalyptic number.

1011200010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011200010012 is an abundant number, since it is smaller than the sum of its proper divisors (1544888904276).

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

1011200010012 is a wasteful number, since it uses less digits than its factorization.

1011200010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28088889177 (or 28088889172 counting only the distinct ones).

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

Adding to 1011200010012 its reverse (2100100021101), we get a palindrome (3111300031113).

The spelling of 1011200010012 in words is "one trillion, eleven billion, two hundred million, ten thousand, twelve".