10133121021 has 16 divisors (see below), whose sum is σ = 14416751040. Its totient is φ = 6312193920.

The previous prime is 10133121007. The next prime is 10133121023. The reversal of 10133121021 is 12012133101.

It is a happy number.

It is not a de Polignac number, because 10133121021 - 2²¹ = 10131023869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10133121023) 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, 1213470 + ... + 1221791.

It is an arithmetic number, because the mean of its divisors is an integer number (901046940).

Almost surely, 2^10133121021 is an apocalyptic number.

It is an amenable number.

10133121021 is a deficient number, since it is larger than the sum of its proper divisors (4283630019).

10133121021 is a wasteful number, since it uses less digits than its factorization.

10133121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435356.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10133121021 its reverse (12012133101), we get a palindrome (22145254122).

The spelling of 10133121021 in words is "ten billion, one hundred thirty-three million, one hundred twenty-one thousand, twenty-one".