10122012221 has 8 divisors (see below), whose sum is σ = 10141148160. Its totient is φ = 10102895152.

The previous prime is 10122012181. The next prime is 10122012301. The reversal of 10122012221 is 12221022101.

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 10122012221 - 2²⁶ = 10054903357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122012196 and 10122012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122012421) 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, 1471436 + ... + 1478298.

It is an arithmetic number, because the mean of its divisors is an integer number (1267643520).

Almost surely, 2^10122012221 is an apocalyptic number.

It is an amenable number.

10122012221 is a deficient number, since it is larger than the sum of its proper divisors (19135939).

10122012221 is an equidigital number, since it uses as much as digits as its factorization.

10122012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9435.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10122012221 its reverse (12221022101), we get a palindrome (22343034322).

The spelling of 10122012221 in words is "ten billion, one hundred twenty-two million, twelve thousand, two hundred twenty-one".