22821051 has 32 divisors (see below), whose sum is σ = 34546176. Its totient is φ = 13280000.

The previous prime is 22821031. The next prime is 22821077. The reversal of 22821051 is 15012822.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22821051 - 2¹³ = 22812859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22821031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136570 + ... + 136736.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^22821051 is an apocalyptic number.

22821051 is a deficient number, since it is larger than the sum of its proper divisors (11725125).

22821051 is a wasteful number, since it uses less digits than its factorization.

22821051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 22821051 is about 4777.1383693588. The cubic root of 22821051 is about 283.6472302763.

Adding to 22821051 its reverse (15012822), we get a palindrome (37833873).

It can be divided in two parts, 2282 and 1051, that added together give a palindrome (3333).

The spelling of 22821051 in words is "twenty-two million, eight hundred twenty-one thousand, fifty-one".