101020210101 has 16 divisors (see below), whose sum is σ = 149672515200. Its totient is φ = 67340981664.

The previous prime is 101020210069. The next prime is 101020210111. The reversal of 101020210101 is 101012020101.

It is a happy number.

It is not a de Polignac number, because 101020210101 - 2⁵ = 101020210069 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 (101020210111) 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, 168385 + ... + 479993.

It is an arithmetic number, because the mean of its divisors is an integer number (9354532200).

Almost surely, 2^101020210101 is an apocalyptic number.

It is an amenable number.

101020210101 is a deficient number, since it is larger than the sum of its proper divisors (48652305099).

101020210101 is a wasteful number, since it uses less digits than its factorization.

101020210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323625 (or 323619 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101020210101 its reverse (101012020101), we get a palindrome (202032230202).

The spelling of 101020210101 in words is "one hundred one billion, twenty million, two hundred ten thousand, one hundred one".