21020222111002 has 8 divisors (see below), whose sum is σ = 31563418513716. Its totient is φ = 10499082606432.

The previous prime is 21020222110931. The next prime is 21020222111029. The reversal of 21020222111002 is 20011122202012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19614880619161 + 1405341491841 = 4428869^2 + 1185471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×21020222111002³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5514222153 + ... + 5514225964.

Almost surely, 2^{21020222111002} is an apocalyptic number.

21020222111002 is a deficient number, since it is larger than the sum of its proper divisors (10543196402714).

21020222111002 is a wasteful number, since it uses less digits than its factorization.

21020222111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11028449072.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21020222111002 its reverse (20011122202012), we get a palindrome (41031344313014).

The spelling of 21020222111002 in words is "twenty-one trillion, twenty billion, two hundred twenty-two million, one hundred eleven thousand, two".