10202221221 has 8 divisors (see below), whose sum is σ = 13681592160. Its totient is φ = 6762165552.

The previous prime is 10202221219. The next prime is 10202221223. The reversal of 10202221221 is 12212220201.

It is an interprime number because it is at equal distance from previous prime (10202221219) and next prime (10202221223).

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

It is not a de Polignac number, because 10202221221 - 2¹ = 10202221219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9828211 + ... + 9829248.

It is an arithmetic number, because the mean of its divisors is an integer number (1710199020).

Almost surely, 2^10202221221 is an apocalyptic number.

It is an amenable number.

10202221221 is a deficient number, since it is larger than the sum of its proper divisors (3479370939).

10202221221 is a wasteful number, since it uses less digits than its factorization.

10202221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19657635.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10202221221 its reverse (12212220201), we get a palindrome (22414441422).

The spelling of 10202221221 in words is "ten billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".