22052121 has 16 divisors (see below), whose sum is σ = 36188544. Its totient is φ = 11631744.

The previous prime is 22052119. The next prime is 22052123. The reversal of 22052121 is 12125022.

It is an interprime number because it is at equal distance from previous prime (22052119) and next prime (22052123).

It is not a de Polignac number, because 22052121 - 2¹ = 22052119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22052121.

It is not an unprimeable number, because it can be changed into a prime (22052123) 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, 40116 + ... + 40661.

It is an arithmetic number, because the mean of its divisors is an integer number (2261784).

Almost surely, 2^22052121 is an apocalyptic number.

22052121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22052121 is a deficient number, since it is larger than the sum of its proper divisors (14136423).

22052121 is a wasteful number, since it uses less digits than its factorization.

22052121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80800.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22052121 is about 4695.9685901846. The cubic root of 22052121 is about 280.4250389897.

Adding to 22052121 its reverse (12125022), we get a palindrome (34177143).

The spelling of 22052121 in words is "twenty-two million, fifty-two thousand, one hundred twenty-one".