9842121222 has 16 divisors (see below), whose sum is σ = 20540079360. Its totient is φ = 3138067592.

The previous prime is 9842121221. The next prime is 9842121229. The reversal of 9842121222 is 2221212489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9842121221) 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, 35659722 + ... + 35659997.

It is an arithmetic number, because the mean of its divisors is an integer number (1283754960).

Almost surely, 2^9842121222 is an apocalyptic number.

9842121222 is an abundant number, since it is smaller than the sum of its proper divisors (10697958138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9842121222 is a wasteful number, since it uses less digits than its factorization.

9842121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71319747.

The product of its digits is 9216, while the sum is 33.

The square root of 9842121222 is about 99207.4655557736. The cubic root of 9842121222 is about 2143.0365096728.

The spelling of 9842121222 in words is "nine billion, eight hundred forty-two million, one hundred twenty-one thousand, two hundred twenty-two".