1200111002122 has 4 divisors (see below), whose sum is σ = 1800166503186. Its totient is φ = 600055501060.

The previous prime is 1200111002119. The next prime is 1200111002141. The reversal of 1200111002122 is 2212001110021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1113803726161 + 86307275961 = 1055369^2 + 293781^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300027750529 + ... + 300027750532.

Almost surely, 2^{1200111002122} is an apocalyptic number.

1200111002122 is a deficient number, since it is larger than the sum of its proper divisors (600055501064).

1200111002122 is an equidigital number, since it uses as much as digits as its factorization.

1200111002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600055501063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200111002122 its reverse (2212001110021), we get a palindrome (3412112112143).

It can be divided in two parts, 12001110021 and 22, that multiplied together give a palindrome (264024420462).

The spelling of 1200111002122 in words is "one trillion, two hundred billion, one hundred eleven million, two thousand, one hundred twenty-two".