102021220101 has 8 divisors (see below), whose sum is σ = 139704733984. Its totient is φ = 66175926480.

The previous prime is 102021220087. The next prime is 102021220109. The reversal of 102021220101 is 101022120201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102021220101 - 2¹⁴ = 102021203717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021220109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459554935 + ... + 459555156.

It is an arithmetic number, because the mean of its divisors is an integer number (17463091748).

Almost surely, 2^102021220101 is an apocalyptic number.

It is an amenable number.

102021220101 is a deficient number, since it is larger than the sum of its proper divisors (37683513883).

102021220101 is an equidigital number, since it uses as much as digits as its factorization.

102021220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919110131.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102021220101 its reverse (101022120201), we get a palindrome (203043340302).

The spelling of 102021220101 in words is "one hundred two billion, twenty-one million, two hundred twenty thousand, one hundred one".