102220142021 has 8 divisors (see below), whose sum is σ = 102676277760. Its totient is φ = 101764243728.

The previous prime is 102220141979. The next prime is 102220142041. The reversal of 102220142021 is 120241022201.

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-102220142021 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 (102220142041) 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, 833375 + ... + 948131.

It is an arithmetic number, because the mean of its divisors is an integer number (12834534720).

Almost surely, 2^102220142021 is an apocalyptic number.

It is an amenable number.

102220142021 is a deficient number, since it is larger than the sum of its proper divisors (456135739).

102220142021 is a wasteful number, since it uses less digits than its factorization.

102220142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118723.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102220142021 its reverse (120241022201), we get a palindrome (222461164222).

The spelling of 102220142021 in words is "one hundred two billion, two hundred twenty million, one hundred forty-two thousand, twenty-one".