1211212212002 has 24 divisors (see below), whose sum is σ = 2064971017116. Its totient is φ = 529598857824.

The previous prime is 1211212211981. The next prime is 1211212212017. The reversal of 1211212212002 is 2002122121121.

It can be written as a sum of positive squares in 2 ways, for example, as 1209008003401 + 2204208601 = 1099549^2 + 46949^2 .

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 in 11 ways as a sum of consecutive naturals, for example, 64512893 + ... + 64531664.

Almost surely, 2^{1211212212002} is an apocalyptic number.

1211212212002 is a deficient number, since it is larger than the sum of its proper divisors (853758805114).

1211212212002 is a wasteful number, since it uses less digits than its factorization.

1211212212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129044610 (or 129044591 counting only the distinct ones).

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

Adding to 1211212212002 its reverse (2002122121121), we get a palindrome (3213334333123).

The spelling of 1211212212002 in words is "one trillion, two hundred eleven billion, two hundred twelve million, two hundred twelve thousand, two".