10121310221 has 16 divisors (see below), whose sum is σ = 11200932288. Its totient is φ = 9069177600.

The previous prime is 10121310217. The next prime is 10121310233. The reversal of 10121310221 is 12201312101.

It is a cyclic number.

It is not a de Polignac number, because 10121310221 - 2² = 10121310217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121310196 and 10121310205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121310211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202490 + ... + 247476.

It is an arithmetic number, because the mean of its divisors is an integer number (700058268).

Almost surely, 2^10121310221 is an apocalyptic number.

10121310221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10121310221 is a deficient number, since it is larger than the sum of its proper divisors (1079622067).

10121310221 is a wasteful number, since it uses less digits than its factorization.

10121310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45292.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10121310221 its reverse (12201312101), we get a palindrome (22322622322).

The spelling of 10121310221 in words is "ten billion, one hundred twenty-one million, three hundred ten thousand, two hundred twenty-one".