20244021002 has 4 divisors (see below), whose sum is σ = 30366031506. Its totient is φ = 10122010500.

The previous prime is 20244021001. The next prime is 20244021019. The reversal of 20244021002 is 20012044202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20012044202 = 2 ⋅10006022101.

It can be written as a sum of positive squares in only one way, i.e., 16589697601 + 3654323401 = 128801^2 + 60451^2 .

It is not an unprimeable number, because it can be changed into a prime (20244021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061005249 + ... + 5061005252.

Almost surely, 2^20244021002 is an apocalyptic number.

20244021002 is a deficient number, since it is larger than the sum of its proper divisors (10122010504).

20244021002 is a wasteful number, since it uses less digits than its factorization.

20244021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122010503.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20244021002 its reverse (20012044202), we get a palindrome (40256065204).

The spelling of 20244021002 in words is "twenty billion, two hundred forty-four million, twenty-one thousand, two".