1211221002002 has 8 divisors (see below), whose sum is σ = 1981998003312. Its totient is φ = 550555000900.

The previous prime is 1211221001897. The next prime is 1211221002007. The reversal of 1211221002002 is 2002001221121.

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 (1211221002007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27527750024 + ... + 27527750067.

It is an arithmetic number, because the mean of its divisors is an integer number (247749750414).

Almost surely, 2^{1211221002002} is an apocalyptic number.

1211221002002 is a deficient number, since it is larger than the sum of its proper divisors (770777001310).

1211221002002 is a wasteful number, since it uses less digits than its factorization.

1211221002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55055500104.

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

Adding to 1211221002002 its reverse (2002001221121), we get a palindrome (3213222223123).

The spelling of 1211221002002 in words is "one trillion, two hundred eleven billion, two hundred twenty-one million, two thousand, two".