2021221100002 has 32 divisors (see below), whose sum is σ = 3311633872512. Its totient is φ = 919575794304.

The previous prime is 2021221099993. The next prime is 2021221100029. The reversal of 2021221100002 is 2000011221202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 3093763 + ... + 3689689.

It is an arithmetic number, because the mean of its divisors is an integer number (103488558516).

Almost surely, 2^{2021221100002} is an apocalyptic number.

2021221100002 is a deficient number, since it is larger than the sum of its proper divisors (1290412772510).

2021221100002 is a wasteful number, since it uses less digits than its factorization.

2021221100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597802.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021221100002 its reverse (2000011221202), we get a palindrome (4021232321204).

The spelling of 2021221100002 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one hundred thousand, two".