1200212321011 has 16 divisors (see below), whose sum is σ = 1365665608800. Its totient is φ = 1053477865440.

The previous prime is 1200212321003. The next prime is 1200212321041. The reversal of 1200212321011 is 1101232120021.

It is not a de Polignac number, because 1200212321011 - 2³ = 1200212321003 is a prime.

It is a super-2 number, since 2×1200212321011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200212321041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15508596 + ... + 15585793.

It is an arithmetic number, because the mean of its divisors is an integer number (85354100550).

Almost surely, 2^{1200212321011} is an apocalyptic number.

1200212321011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200212321011 is a deficient number, since it is larger than the sum of its proper divisors (165453287789).

1200212321011 is an equidigital number, since it uses as much as digits as its factorization.

1200212321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31094451 (or 31094429 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1200212321011 its reverse (1101232120021), we get a palindrome (2301444441032).

The spelling of 1200212321011 in words is "one trillion, two hundred billion, two hundred twelve million, three hundred twenty-one thousand, eleven".