102210020121221 has 8 divisors (see below), whose sum is σ = 103108413451680. Its totient is φ = 101314935790992.

The previous prime is 102210020121173. The next prime is 102210020121229. The reversal of 102210020121221 is 122121020012201.

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

It is a cyclic number.

It is not a de Polignac number, because 102210020121221 - 2¹⁴ = 102210020104837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102210020121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210020121229) 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, 827188010 + ... + 827311563.

It is an arithmetic number, because the mean of its divisors is an integer number (12888551681460).

Almost surely, 2^{102210020121221} is an apocalyptic number.

It is an amenable number.

102210020121221 is a deficient number, since it is larger than the sum of its proper divisors (898393330459).

102210020121221 is a wasteful number, since it uses less digits than its factorization.

102210020121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654500115.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102210020121221 its reverse (122121020012201), we get a palindrome (224331040133422).

The spelling of 102210020121221 in words is "one hundred two trillion, two hundred ten billion, twenty million, one hundred twenty-one thousand, two hundred twenty-one".