33321221002121 has 8 divisors (see below), whose sum is σ = 35884498401864. Its totient is φ = 30757958824320.

The previous prime is 33321221002109. The next prime is 33321221002177. The reversal of 33321221002121 is 12120012212333.

It can be written as a sum of positive squares in 4 ways, for example, as 6073489158025 + 27247731844096 = 2464445^2 + 5219936^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33321221002121 - 2⁶ = 33321221002057 is a prime.

It is a super-2 number, since 2×33321221002121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33321221022121) 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, 962195 + ... + 8219991.

It is an arithmetic number, because the mean of its divisors is an integer number (4485562300233).

Almost surely, 2^{33321221002121} is an apocalyptic number.

It is an amenable number.

33321221002121 is a deficient number, since it is larger than the sum of its proper divisors (2563277399743).

33321221002121 is a wasteful number, since it uses less digits than its factorization.

33321221002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610971.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 33321221002121 its reverse (12120012212333), we get a palindrome (45441233214454).

The spelling of 33321221002121 in words is "thirty-three trillion, three hundred twenty-one billion, two hundred twenty-one million, two thousand, one hundred twenty-one".