33021400221377 has 2 divisors, whose sum is σ = 33021400221378. Its totient is φ = 33021400221376.

The previous prime is 33021400221371. The next prime is 33021400221457. The reversal of 33021400221377 is 77312200412033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32787179068081 + 234221153296 = 5726009^2 + 483964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33021400221377 is a prime.

It is a super-2 number, since 2×33021400221377² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33021400221371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16510700110688 + 16510700110689.

It is an arithmetic number, because the mean of its divisors is an integer number (16510700110689).

Almost surely, 2^{33021400221377} is an apocalyptic number.

It is an amenable number.

33021400221377 is a deficient number, since it is larger than the sum of its proper divisors (1).

33021400221377 is an equidigital number, since it uses as much as digits as its factorization.

33021400221377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 33021400221377 in words is "thirty-three trillion, twenty-one billion, four hundred million, two hundred twenty-one thousand, three hundred seventy-seven".