20010221101033 has 4 divisors (see below), whose sum is σ = 20032882733968. Its totient is φ = 19987559468100.

The previous prime is 20010221101021. The next prime is 20010221101049. The reversal of 20010221101033 is 33010112201002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010221101033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010221100998 and 20010221101016.

It is not an unprimeable number, because it can be changed into a prime (20010221141033) 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, 11330815143 + ... + 11330816908.

It is an arithmetic number, because the mean of its divisors is an integer number (5008220683492).

Almost surely, 2^{20010221101033} is an apocalyptic number.

It is an amenable number.

20010221101033 is a deficient number, since it is larger than the sum of its proper divisors (22661632935).

20010221101033 is an equidigital number, since it uses as much as digits as its factorization.

20010221101033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22661632934.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20010221101033 its reverse (33010112201002), we get a palindrome (53020333302035).

The spelling of 20010221101033 in words is "twenty trillion, ten billion, two hundred twenty-one million, one hundred one thousand, thirty-three".