33213400061 has 2 divisors, whose sum is σ = 33213400062. Its totient is φ = 33213400060.

The previous prime is 33213400037. The next prime is 33213400127. The reversal of 33213400061 is 16000431233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22713504100 + 10499895961 = 150710^2 + 102469^2 .

It is a cyclic number.

It is not a de Polignac number, because 33213400061 - 2²⁶ = 33146291197 is a prime.

It is a super-2 number, since 2×33213400061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33213490061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606700030 + 16606700031.

It is an arithmetic number, because the mean of its divisors is an integer number (16606700031).

Almost surely, 2^33213400061 is an apocalyptic number.

It is an amenable number.

33213400061 is a deficient number, since it is larger than the sum of its proper divisors (1).

33213400061 is an equidigital number, since it uses as much as digits as its factorization.

33213400061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 33213400061 its reverse (16000431233), we get a palindrome (49213831294).

The spelling of 33213400061 in words is "thirty-three billion, two hundred thirteen million, four hundred thousand, sixty-one".