3550022021 has 24 divisors (see below), whose sum is σ = 4459198464. Its totient is φ = 2801282400.

The previous prime is 3550022011. The next prime is 3550022057. The reversal of 3550022021 is 1202200553.

It is a de Polignac number, because none of the positive numbers 2^k-3550022021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3550021984 and 3550022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3550022011) 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, 236696 + ... + 251246.

It is an arithmetic number, because the mean of its divisors is an integer number (185799936).

Almost surely, 2^3550022021 is an apocalyptic number.

It is an amenable number.

3550022021 is a deficient number, since it is larger than the sum of its proper divisors (909176443).

3550022021 is a wasteful number, since it uses less digits than its factorization.

3550022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14961 (or 14954 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 3550022021 is about 59582.0612349053. The cubic root of 3550022021 is about 1525.4934561494.

Adding to 3550022021 its reverse (1202200553), we get a palindrome (4752222574).

The spelling of 3550022021 in words is "three billion, five hundred fifty million, twenty-two thousand, twenty-one".