20202030101 has 4 divisors (see below), whose sum is σ = 22038578304. Its totient is φ = 18365481900.

The previous prime is 20202030071. The next prime is 20202030113. The reversal of 20202030101 is 10103020202.

It is a happy number.

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-20202030101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 1836548191 = 20202030101 / (2 + 0 + 2 + 0 + 2 + 0 + 3 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202030131) 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, 918274085 + ... + 918274106.

It is an arithmetic number, because the mean of its divisors is an integer number (5509644576).

Almost surely, 2^20202030101 is an apocalyptic number.

It is an amenable number.

20202030101 is a deficient number, since it is larger than the sum of its proper divisors (1836548203).

20202030101 is a wasteful number, since it uses less digits than its factorization.

20202030101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836548202.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20202030101 its reverse (10103020202), we get a palindrome (30305050303).

The spelling of 20202030101 in words is "twenty billion, two hundred two million, thirty thousand, one hundred one".