1212210021002 has 8 divisors (see below), whose sum is σ = 1818842242500. Its totient is φ = 605929273504.

The previous prime is 1212210020969. The next prime is 1212210021007. The reversal of 1212210021002 is 2001200122121.

It can be written as a sum of positive squares in 2 ways, for example, as 838178701441 + 374031319561 = 915521^2 + 611581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1212210021007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87859877 + ... + 87873672.

Almost surely, 2^{1212210021002} is an apocalyptic number.

1212210021002 is a deficient number, since it is larger than the sum of its proper divisors (606632221498).

1212210021002 is a wasteful number, since it uses less digits than its factorization.

1212210021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175737000.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212210021002 its reverse (2001200122121), we get a palindrome (3213410143123).

The spelling of 1212210021002 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty-one thousand, two".