9020211221 has 8 divisors (see below), whose sum is σ = 10851382080. Its totient is φ = 7324682688.

The previous prime is 9020211209. The next prime is 9020211251. The reversal of 9020211221 is 1221120209.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9020211221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9020211193 and 9020211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9020211251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33910436 + ... + 33910701.

It is an arithmetic number, because the mean of its divisors is an integer number (1356422760).

Almost surely, 2^9020211221 is an apocalyptic number.

It is an amenable number.

9020211221 is a deficient number, since it is larger than the sum of its proper divisors (1831170859).

9020211221 is a wasteful number, since it uses less digits than its factorization.

9020211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67821163.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 9020211221 is about 94974.7925557092. The cubic root of 9020211221 is about 2081.6397342614.

The spelling of 9020211221 in words is "nine billion, twenty million, two hundred eleven thousand, two hundred twenty-one".