1200012111010 has 16 divisors (see below), whose sum is σ = 2160067217472. Its totient is φ = 479994751600.

The previous prime is 1200012110977. The next prime is 1200012111017. The reversal of 1200012111010 is 101112100021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1200012111017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752446 + ... + 1722265.

It is an arithmetic number, because the mean of its divisors is an integer number (135004201092).

Almost surely, 2^{1200012111010} is an apocalyptic number.

1200012111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200012111010 is a deficient number, since it is larger than the sum of its proper divisors (960055106462).

1200012111010 is a wasteful number, since it uses less digits than its factorization.

1200012111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523209.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1200012111010 its reverse (101112100021), we get a palindrome (1301124211031).

The spelling of 1200012111010 in words is "one trillion, two hundred billion, twelve million, one hundred eleven thousand, ten".