1022200121 has 4 divisors (see below), whose sum is σ = 1024232832. Its totient is φ = 1020167412.

The previous prime is 1022200117. The next prime is 1022200129. The reversal of 1022200121 is 1210022201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1022200121 - 2² = 1022200117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022200129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015601 + ... + 1016606.

It is an arithmetic number, because the mean of its divisors is an integer number (256058208).

Almost surely, 2^1022200121 is an apocalyptic number.

It is an amenable number.

1022200121 is a deficient number, since it is larger than the sum of its proper divisors (2032711).

1022200121 is an equidigital number, since it uses as much as digits as its factorization.

1022200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032710.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1022200121 is about 31971.8645217948. The cubic root of 1022200121 is about 1007.3459452850.

Adding to 1022200121 its reverse (1210022201), we get a palindrome (2232222322).

The spelling of 1022200121 in words is "one billion, twenty-two million, two hundred thousand, one hundred twenty-one".