102220012021 has 8 divisors (see below), whose sum is σ = 102681379584. Its totient is φ = 101758741920.

The previous prime is 102220011997. The next prime is 102220012051. The reversal of 102220012021 is 120210022201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220012021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102220011992 and 102220012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220012051) 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, 2822001 + ... + 2857993.

It is an arithmetic number, because the mean of its divisors is an integer number (12835172448).

Almost surely, 2^102220012021 is an apocalyptic number.

It is an amenable number.

102220012021 is a deficient number, since it is larger than the sum of its proper divisors (461367563).

102220012021 is a wasteful number, since it uses less digits than its factorization.

102220012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48731.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102220012021 its reverse (120210022201), we get a palindrome (222430034222).

The spelling of 102220012021 in words is "one hundred two billion, two hundred twenty million, twelve thousand, twenty-one".