1220000021002 has 16 divisors (see below), whose sum is σ = 2182360286592. Its totient is φ = 500124232080.

The previous prime is 1220000020957. The next prime is 1220000021011. The reversal of 1220000021002 is 2001200000221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220000021002.

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 7 ways as a sum of consecutive naturals, for example, 1894409649 + ... + 1894410292.

It is an arithmetic number, because the mean of its divisors is an integer number (136397517912).

Almost surely, 2^{1220000021002} is an apocalyptic number.

1220000021002 is a deficient number, since it is larger than the sum of its proper divisors (962360265590).

1220000021002 is a wasteful number, since it uses less digits than its factorization.

1220000021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788819973.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1220000021002 its reverse (2001200000221), we get a palindrome (3221200021223).

The spelling of 1220000021002 in words is "one trillion, two hundred twenty billion, twenty-one thousand, two".