20020221221002 has 8 divisors (see below), whose sum is σ = 30043497262212. Its totient is φ = 10005722133600.

The previous prime is 20020221220969. The next prime is 20020221221009. The reversal of 20020221221002 is 20012212202002.

It can be written as a sum of positive squares in 2 ways, for example, as 19273671652041 + 746549568961 = 4390179^2 + 864031^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20020221221009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194232749 + ... + 2194241872.

Almost surely, 2^{20020221221002} is an apocalyptic number.

20020221221002 is a deficient number, since it is larger than the sum of its proper divisors (10023276041210).

20020221221002 is a wasteful number, since it uses less digits than its factorization.

20020221221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388476904.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20020221221002 its reverse (20012212202002), we get a palindrome (40032433423004).

The spelling of 20020221221002 in words is "twenty trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, two".