33220000121 has 48 divisors (see below), whose sum is σ = 43877593728. Its totient is φ = 24430291200.

The previous prime is 33220000103. The next prime is 33220000127. The reversal of 33220000121 is 12100002233.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-33220000121 is a prime.

It is a super-2 number, since 2×33220000121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33220000096 and 33220000105.

It is not an unprimeable number, because it can be changed into a prime (33220000127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7808831 + ... + 7813083.

It is an arithmetic number, because the mean of its divisors is an integer number (914116536).

Almost surely, 2^33220000121 is an apocalyptic number.

It is an amenable number.

33220000121 is a deficient number, since it is larger than the sum of its proper divisors (10657593607).

33220000121 is a wasteful number, since it uses less digits than its factorization.

33220000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590 (or 4571 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 33220000121 its reverse (12100002233), we get a palindrome (45320002354).

The spelling of 33220000121 in words is "thirty-three billion, two hundred twenty million, one hundred twenty-one", and thus it is an aban number.