1200011212122 has 16 divisors (see below), whose sum is σ = 2400039446592. Its totient is φ = 400000900320.

The previous prime is 1200011212079. The next prime is 1200011212123. The reversal of 1200011212122 is 2212121100021.

It is not an unprimeable number, because it can be changed into a prime (1200011212123) 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, 322683 + ... + 1582449.

It is an arithmetic number, because the mean of its divisors is an integer number (150002465412).

Almost surely, 2^{1200011212122} is an apocalyptic number.

1200011212122 is an abundant number, since it is smaller than the sum of its proper divisors (1200028234470).

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

1200011212122 is a wasteful number, since it uses less digits than its factorization.

1200011212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418533.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200011212122 its reverse (2212121100021), we get a palindrome (3412132312143).

The spelling of 1200011212122 in words is "one trillion, two hundred billion, eleven million, two hundred twelve thousand, one hundred twenty-two".