1200122021002 has 4 divisors (see below), whose sum is σ = 1800183031506. Its totient is φ = 600061010500.

The previous prime is 1200122020939. The next prime is 1200122021029. The reversal of 1200122021002 is 2001202210021.

It is a happy number.

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., 915295937521 + 284826083481 = 956711^2 + 533691^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300030505249 + ... + 300030505252.

Almost surely, 2^{1200122021002} is an apocalyptic number.

1200122021002 is a deficient number, since it is larger than the sum of its proper divisors (600061010504).

1200122021002 is an equidigital number, since it uses as much as digits as its factorization.

1200122021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600061010503.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200122021002 its reverse (2001202210021), we get a palindrome (3201324231023).

The spelling of 1200122021002 in words is "one trillion, two hundred billion, one hundred twenty-two million, twenty-one thousand, two".