33010121221 has 16 divisors (see below), whose sum is σ = 41301963648. Its totient is φ = 25630617600.

The previous prime is 33010121213. The next prime is 33010121273. The reversal of 33010121221 is 12212101033.

It is not a de Polignac number, because 33010121221 - 2³ = 33010121213 is a prime.

It is a super-2 number, since 2×33010121221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33010121195 and 33010121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33010125221) 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, 741180 + ... + 784453.

It is an arithmetic number, because the mean of its divisors is an integer number (2581372728).

Almost surely, 2^33010121221 is an apocalyptic number.

It is an amenable number.

33010121221 is a deficient number, since it is larger than the sum of its proper divisors (8291842427).

33010121221 is a wasteful number, since it uses less digits than its factorization.

33010121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525932.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 33010121221 its reverse (12212101033), we get a palindrome (45222222254).

The spelling of 33010121221 in words is "thirty-three billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".