33220219997 has 2 divisors, whose sum is σ = 33220219998. Its totient is φ = 33220219996.

The previous prime is 33220219957. The next prime is 33220220003. The reversal of 33220219997 is 79991202233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29143269796 + 4076950201 = 170714^2 + 63851^2 .

It is an emirp because it is prime and its reverse (79991202233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33220219997 - 2⁶ = 33220219933 is a prime.

It is a super-2 number, since 2×33220219997² (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 (33220219937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610109998 + 16610109999.

It is an arithmetic number, because the mean of its divisors is an integer number (16610109999).

Almost surely, 2^33220219997 is an apocalyptic number.

It is an amenable number.

33220219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33220219997 is an equidigital number, since it uses as much as digits as its factorization.

33220219997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 33220219997 in words is "thirty-three billion, two hundred twenty million, two hundred nineteen thousand, nine hundred ninety-seven".