1200022121002 has 16 divisors (see below), whose sum is σ = 1883025808200. Its totient is φ = 572811796480.

The previous prime is 1200022120951. The next prime is 1200022121003. The reversal of 1200022121002 is 2001212200021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 918187484841 + 281834636161 = 958221^2 + 530881^2 .

It is not an unprimeable number, because it can be changed into a prime (1200022121003) 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, 116230999 + ... + 116241322.

Almost surely, 2^{1200022121002} is an apocalyptic number.

1200022121002 is a deficient number, since it is larger than the sum of its proper divisors (683003687198).

1200022121002 is a wasteful number, since it uses less digits than its factorization.

1200022121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232472441.

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

Adding to 1200022121002 its reverse (2001212200021), we get a palindrome (3201234321023).

The spelling of 1200022121002 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty-one thousand, two".