20020210101 has 16 divisors (see below), whose sum is σ = 29665782720. Its totient is φ = 13344011280.

The previous prime is 20020209973. The next prime is 20020210127. The reversal of 20020210101 is 10101202002.

It is not a de Polignac number, because 20020210101 - 2⁷ = 20020209973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020210141) 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, 57951 + ... + 208323.

It is an arithmetic number, because the mean of its divisors is an integer number (1854111420).

Almost surely, 2^20020210101 is an apocalyptic number.

It is an amenable number.

20020210101 is a deficient number, since it is larger than the sum of its proper divisors (9645572619).

20020210101 is a wasteful number, since it uses less digits than its factorization.

20020210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155313 (or 155307 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20020210101 its reverse (10101202002), we get a palindrome (30121412103).

The spelling of 20020210101 in words is "twenty billion, twenty million, two hundred ten thousand, one hundred one".