33522220397 has 4 divisors (see below), whose sum is σ = 33867810396. Its totient is φ = 33176630400.

The previous prime is 33522220387. The next prime is 33522220399. The reversal of 33522220397 is 79302222533.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79302222533 = 100591 ⋅788363.

It can be written as a sum of positive squares in 2 ways, for example, as 8975478121 + 24546742276 = 94739^2 + 156674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33522220397 is a prime.

It is a super-2 number, since 2×33522220397² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33522220397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33522220399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172794854 + ... + 172795047.

It is an arithmetic number, because the mean of its divisors is an integer number (8466952599).

Almost surely, 2^33522220397 is an apocalyptic number.

It is an amenable number.

33522220397 is a deficient number, since it is larger than the sum of its proper divisors (345589999).

33522220397 is an equidigital number, since it uses as much as digits as its factorization.

33522220397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345589998.

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 33522220397 in words is "thirty-three billion, five hundred twenty-two million, two hundred twenty thousand, three hundred ninety-seven".