2221121022 has 16 divisors (see below), whose sum is σ = 4464793872. Its totient is φ = 736615040.

The previous prime is 2221120999. The next prime is 2221121051. The reversal of 2221121022 is 2201211222.

It is a junction number, because it is equal to n+sod(n) for n = 2221120992 and 2221121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938379 + ... + 940742.

It is an arithmetic number, because the mean of its divisors is an integer number (279049617).

Almost surely, 2^2221121022 is an apocalyptic number.

2221121022 is an abundant number, since it is smaller than the sum of its proper divisors (2243672850).

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

2221121022 is a wasteful number, since it uses less digits than its factorization.

2221121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879323.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2221121022 is about 47128.7706395998. The cubic root of 2221121022 is about 1304.7402921190.

Adding to 2221121022 its reverse (2201211222), we get a palindrome (4422332244).

The spelling of 2221121022 in words is "two billion, two hundred twenty-one million, one hundred twenty-one thousand, twenty-two".