10122002212221 has 16 divisors (see below), whose sum is σ = 14996491398720. Its totient is φ = 6747581820240.

The previous prime is 10122002212213. The next prime is 10122002212303. The reversal of 10122002212221 is 12221220022101.

It is a happy number.

10122002212221 is a `hidden beast` number, since 1 + 0 + 1 + 220 + 0 + 221 + 2 + 221 = 666.

It is not a de Polignac number, because 10122002212221 - 2³ = 10122002212213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10122002212194 and 10122002212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122002612221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11214570 + ... + 12083483.

It is an arithmetic number, because the mean of its divisors is an integer number (937280712420).

Almost surely, 2^{10122002212221} is an apocalyptic number.

It is an amenable number.

10122002212221 is a deficient number, since it is larger than the sum of its proper divisors (4874489186499).

10122002212221 is a wasteful number, since it uses less digits than its factorization.

10122002212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23314153 (or 23314147 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10122002212221 its reverse (12221220022101), we get a palindrome (22343222234322).

The spelling of 10122002212221 in words is "ten trillion, one hundred twenty-two billion, two million, two hundred twelve thousand, two hundred twenty-one".