1221010112002 has 32 divisors (see below), whose sum is σ = 1923408031104. Its totient is φ = 580223952000.

The previous prime is 1221010111921. The next prime is 1221010112017. The reversal of 1221010112002 is 2002110101221.

It is a super-2 number, since 2×1221010112002² (a number of 25 digits) contains 22 as substring.

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, 5728648 + ... + 5937964.

It is an arithmetic number, because the mean of its divisors is an integer number (60106500972).

Almost surely, 2^{1221010112002} is an apocalyptic number.

1221010112002 is a deficient number, since it is larger than the sum of its proper divisors (702397919102).

1221010112002 is a wasteful number, since it uses less digits than its factorization.

1221010112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210154.

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

Adding to 1221010112002 its reverse (2002110101221), we get a palindrome (3223120213223).

The spelling of 1221010112002 in words is "one trillion, two hundred twenty-one billion, ten million, one hundred twelve thousand, two".