1212202121002 has 32 divisors (see below), whose sum is σ = 1884883770000. Its totient is φ = 583994966016.

The previous prime is 1212202120967. The next prime is 1212202121017. The reversal of 1212202121002 is 2001212022121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 285967188081 + 926234932921 = 534759^2 + 962411^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62834574 + ... + 62853862.

Almost surely, 2^{1212202121002} is an apocalyptic number.

1212202121002 is a deficient number, since it is larger than the sum of its proper divisors (672681648998).

1212202121002 is a wasteful number, since it uses less digits than its factorization.

1212202121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21498.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212202121002 its reverse (2001212022121), we get a palindrome (3213414143123).

The spelling of 1212202121002 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred twenty-one thousand, two".