10121400220221 has 8 divisors (see below), whose sum is σ = 14994666992960. Its totient is φ = 6747600146796.

The previous prime is 10121400220147. The next prime is 10121400220229. The reversal of 10121400220221 is 12202200412101.

10121400220221 is a `hidden beast` number, since 1 + 0 + 1 + 21 + 400 + 2 + 20 + 221 = 666.

It is not a de Polignac number, because 10121400220221 - 2⁹ = 10121400219709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121400220194 and 10121400220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121400220229) 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, 187433337385 + ... + 187433337438.

It is an arithmetic number, because the mean of its divisors is an integer number (1874333374120).

Almost surely, 2^{10121400220221} is an apocalyptic number.

It is an amenable number.

10121400220221 is a deficient number, since it is larger than the sum of its proper divisors (4873266772739).

10121400220221 is an equidigital number, since it uses as much as digits as its factorization.

10121400220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374866674832 (or 374866674826 counting only the distinct ones).

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

Adding to 10121400220221 its reverse (12202200412101), we get a palindrome (22323600632322).

The spelling of 10121400220221 in words is "ten trillion, one hundred twenty-one billion, four hundred million, two hundred twenty thousand, two hundred twenty-one".