7022211121 has 16 divisors (see below), whose sum is σ = 7788119040. Its totient is φ = 6301555920.

The previous prime is 7022211089. The next prime is 7022211139. The reversal of 7022211121 is 1211122207.

It is a cyclic number.

It is not a de Polignac number, because 7022211121 - 2⁵ = 7022211089 is a prime.

It is a super-2 number, since 2×7022211121² = 98622898055792153282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7022211821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32995 + ... + 123016.

It is an arithmetic number, because the mean of its divisors is an integer number (486757440).

Almost surely, 2^7022211121 is an apocalyptic number.

It is an amenable number.

7022211121 is a deficient number, since it is larger than the sum of its proper divisors (765907919).

7022211121 is a wasteful number, since it uses less digits than its factorization.

7022211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156156.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 7022211121 is about 83798.6343623809. The cubic root of 7022211121 is about 1914.9523011659.

Adding to 7022211121 its reverse (1211122207), we get a palindrome (8233333328).

The spelling of 7022211121 in words is "seven billion, twenty-two million, two hundred eleven thousand, one hundred twenty-one".