20021301003 has 16 divisors (see below), whose sum is σ = 29410232832. Its totient is φ = 12013980000.

The previous prime is 20021300983. The next prime is 20021301007. The reversal of 20021301003 is 30010312002.

It is a happy number.

It is not a de Polignac number, because 20021301003 - 2⁹ = 20021300491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20021301003.

It is not an unprimeable number, because it can be changed into a prime (20021301007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3000163 + ... + 3006828.

It is an arithmetic number, because the mean of its divisors is an integer number (1838139552).

Almost surely, 2^20021301003 is an apocalyptic number.

20021301003 is a deficient number, since it is larger than the sum of its proper divisors (9388931829).

20021301003 is a wasteful number, since it uses less digits than its factorization.

20021301003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007106.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20021301003 its reverse (30010312002), we get a palindrome (50031613005).

The spelling of 20021301003 in words is "twenty billion, twenty-one million, three hundred one thousand, three".