33222012021 has 24 divisors (see below), whose sum is σ = 52357215456. Its totient is φ = 20131715040.

The previous prime is 33222012013. The next prime is 33222012023. The reversal of 33222012021 is 12021022233.

It is not a de Polignac number, because 33222012021 - 2³ = 33222012013 is a prime.

It is a super-2 number, since 2×33222012021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33222011985 and 33222012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33222012023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841306 + ... + 879908.

It is an arithmetic number, because the mean of its divisors is an integer number (2181550644).

Almost surely, 2^33222012021 is an apocalyptic number.

It is an amenable number.

33222012021 is a deficient number, since it is larger than the sum of its proper divisors (19135203435).

33222012021 is a wasteful number, since it uses less digits than its factorization.

33222012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47313 (or 47310 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 33222012021 its reverse (12021022233), we get a palindrome (45243034254).

The spelling of 33222012021 in words is "thirty-three billion, two hundred twenty-two million, twelve thousand, twenty-one".