1212122121002 has 16 divisors (see below), whose sum is σ = 1963853658312. Its totient is φ = 557780912640.

The previous prime is 1212122120999. The next prime is 1212122121013. The reversal of 1212122121002 is 2001212212121.

It can be written as a sum of positive squares in 4 ways, for example, as 421251623521 + 790870497481 = 649039^2 + 889309^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69160499 + ... + 69178022.

Almost surely, 2^{1212122121002} is an apocalyptic number.

1212122121002 is a deficient number, since it is larger than the sum of its proper divisors (751731537310).

1212122121002 is a wasteful number, since it uses less digits than its factorization.

1212122121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138338873.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212122121002 its reverse (2001212212121), we get a palindrome (3213334333123).

The spelling of 1212122121002 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, two".