7210121222 has 8 divisors (see below), whose sum is σ = 10936701000. Its totient is φ = 3564554224.

The previous prime is 7210121221. The next prime is 7210121251. The reversal of 7210121222 is 2221210127.

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

It is a junction number, because it is equal to n+sod(n) for n = 7210121194 and 7210121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7210121221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20252972 + ... + 20253327.

It is an arithmetic number, because the mean of its divisors is an integer number (1367087625).

Almost surely, 2^7210121222 is an apocalyptic number.

7210121222 is a deficient number, since it is larger than the sum of its proper divisors (3726579778).

7210121222 is a wasteful number, since it uses less digits than its factorization.

7210121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40506390.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 7210121222 is about 84912.4326703693. The cubic root of 7210121222 is about 1931.8831541269.

Adding to 7210121222 its reverse (2221210127), we get a palindrome (9431331349).

The spelling of 7210121222 in words is "seven billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty-two".