10112121421221 has 32 divisors (see below), whose sum is σ = 13836442245120. Its totient is φ = 6565524344064.

The previous prime is 10112121421211. The next prime is 10112121421223. The reversal of 10112121421221 is 12212412121101.

It is not a de Polignac number, because 10112121421221 - 2¹⁰ = 10112121420197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112121421223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323479090 + ... + 323510348.

It is an arithmetic number, because the mean of its divisors is an integer number (432388820160).

Almost surely, 2^{10112121421221} is an apocalyptic number.

It is an amenable number.

10112121421221 is a deficient number, since it is larger than the sum of its proper divisors (3724320823899).

10112121421221 is a wasteful number, since it uses less digits than its factorization.

10112121421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38505.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 10112121421221 its reverse (12212412121101), we get a palindrome (22324533542322).

The spelling of 10112121421221 in words is "ten trillion, one hundred twelve billion, one hundred twenty-one million, four hundred twenty-one thousand, two hundred twenty-one".