1222012101 has 4 divisors (see below), whose sum is σ = 1629349472. Its totient is φ = 814674732.

The previous prime is 1222012091. The next prime is 1222012123. The reversal of 1222012101 is 1012102221.

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 not a de Polignac number, because 1222012101 - 2⁵ = 1222012069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222012201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203668681 + ... + 203668686.

It is an arithmetic number, because the mean of its divisors is an integer number (407337368).

Almost surely, 2^1222012101 is an apocalyptic number.

It is an amenable number.

1222012101 is a deficient number, since it is larger than the sum of its proper divisors (407337371).

1222012101 is an equidigital number, since it uses as much as digits as its factorization.

1222012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407337370.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222012101 is about 34957.2896689660. The cubic root of 1222012101 is about 1069.1168363932.

Adding to 1222012101 its reverse (1012102221), we get a palindrome (2234114322).

The spelling of 1222012101 in words is "one billion, two hundred twenty-two million, twelve thousand, one hundred one".