33010312122221 has 12 divisors (see below), whose sum is σ = 40658559709788. Its totient is φ = 26630167761792.

The previous prime is 33010312122211. The next prime is 33010312122233. The reversal of 33010312122221 is 12222121301033.

It can be written as a sum of positive squares in 2 ways, for example, as 30914867692996 + 2095444429225 = 5560114^2 + 1447565^2 .

It is not a de Polignac number, because 33010312122221 - 2³⁸ = 32735434215277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33010312122211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19814112086 + ... + 19814113751.

It is an arithmetic number, because the mean of its divisors is an integer number (3388213309149).

Almost surely, 2^{33010312122221} is an apocalyptic number.

It is an amenable number.

33010312122221 is a deficient number, since it is larger than the sum of its proper divisors (7648247587567).

33010312122221 is a wasteful number, since it uses less digits than its factorization.

33010312122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39628225868 (or 39628225861 counting only the distinct ones).

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

Adding to 33010312122221 its reverse (12222121301033), we get a palindrome (45232433423254).

The spelling of 33010312122221 in words is "thirty-three trillion, ten billion, three hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".