1200012021210 has 32 divisors (see below), whose sum is σ = 2957867471232. Its totient is φ = 311354470080.

The previous prime is 1200012021097. The next prime is 1200012021211. The reversal of 1200012021210 is 121202100021.

It is not an unprimeable number, because it can be changed into a prime (1200012021211) 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, 540544846 + ... + 540547065.

It is an arithmetic number, because the mean of its divisors is an integer number (92433358476).

Almost surely, 2^{1200012021210} is an apocalyptic number.

1200012021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200012021210 is an abundant number, since it is smaller than the sum of its proper divisors (1757855450022).

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

1200012021210 is a wasteful number, since it uses less digits than its factorization.

1200012021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081091958.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200012021210 its reverse (121202100021), we get a palindrome (1321214121231).

The spelling of 1200012021210 in words is "one trillion, two hundred billion, twelve million, twenty-one thousand, two hundred ten".