33220121031 has 20 divisors (see below), whose sum is σ = 49829367192. Its totient is φ = 22146734232.

The previous prime is 33220121027. The next prime is 33220121147. The reversal of 33220121031 is 13012102233.

It is not a de Polignac number, because 33220121031 - 2² = 33220121027 is a prime.

It is a super-2 number, since 2×33220121031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33220120995 and 33220121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220126031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 824196 + ... + 863561.

Almost surely, 2^33220121031 is an apocalyptic number.

33220121031 is a deficient number, since it is larger than the sum of its proper divisors (16609246161).

33220121031 is an frugal number, since it uses more digits than its factorization.

33220121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687784 (or 1687760 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 33220121031 its reverse (13012102233), we get a palindrome (46232223264).

The spelling of 33220121031 in words is "thirty-three billion, two hundred twenty million, one hundred twenty-one thousand, thirty-one".