1221201110002 has 16 divisors (see below), whose sum is σ = 1891919490912. Its totient is φ = 590826700800.

The previous prime is 1221201109993. The next prime is 1221201110011. The reversal of 1221201110002 is 2000111021221.

It is an interprime number because it is at equal distance from previous prime (1221201109993) and next prime (1221201110011).

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, 66345999 + ... + 66364402.

It is an arithmetic number, because the mean of its divisors is an integer number (118244968182).

Almost surely, 2^{1221201110002} is an apocalyptic number.

1221201110002 is a deficient number, since it is larger than the sum of its proper divisors (670718380910).

1221201110002 is a wasteful number, since it uses less digits than its factorization.

1221201110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132710553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1221201110002 its reverse (2000111021221), we get a palindrome (3221312131223).

The spelling of 1221201110002 in words is "one trillion, two hundred twenty-one billion, two hundred one million, one hundred ten thousand, two".