20021211210003 has 16 divisors (see below), whose sum is σ = 26714487072000. Its totient is φ = 13337707001760.

The previous prime is 20021211209983. The next prime is 20021211210031. The reversal of 20021211210003 is 30001211212002.

It is not a de Polignac number, because 20021211210003 - 2¹⁰ = 20021211208979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021211260003) 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, 35752858 + ... + 36308528.

It is an arithmetic number, because the mean of its divisors is an integer number (1669655442000).

Almost surely, 2^{20021211210003} is an apocalyptic number.

20021211210003 is a deficient number, since it is larger than the sum of its proper divisors (6693275861997).

20021211210003 is a wasteful number, since it uses less digits than its factorization.

20021211210003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564442.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20021211210003 its reverse (30001211212002), we get a palindrome (50022422422005).

The spelling of 20021211210003 in words is "twenty trillion, twenty-one billion, two hundred eleven million, two hundred ten thousand, three".