20101022020203 has 4 divisors (see below), whose sum is σ = 26801362693608. Its totient is φ = 13400681346800.

The previous prime is 20101022020171. The next prime is 20101022020291. The reversal of 20101022020203 is 30202022010102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20101022020203 - 2⁵ = 20101022020171 is a prime.

It is a super-2 number, since 2×20101022020203² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20101022021203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350170336698 + ... + 3350170336703.

It is an arithmetic number, because the mean of its divisors is an integer number (6700340673402).

Almost surely, 2^{20101022020203} is an apocalyptic number.

20101022020203 is a deficient number, since it is larger than the sum of its proper divisors (6700340673405).

20101022020203 is an equidigital number, since it uses as much as digits as its factorization.

20101022020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700340673404.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20101022020203 its reverse (30202022010102), we get a palindrome (50303044030305).

The spelling of 20101022020203 in words is "twenty trillion, one hundred one billion, twenty-two million, twenty thousand, two hundred three".