1222421101 has 8 divisors (see below), whose sum is σ = 1344052224. Its totient is φ = 1102540320.

The previous prime is 1222421087. The next prime is 1222421113. The reversal of 1222421101 is 1011242221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222421101 - 2¹⁷ = 1222290029 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 (1222421131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436120 + ... + 438913.

It is an arithmetic number, because the mean of its divisors is an integer number (168006528).

Almost surely, 2^1222421101 is an apocalyptic number.

1222421101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222421101 is a deficient number, since it is larger than the sum of its proper divisors (121631123).

1222421101 is a wasteful number, since it uses less digits than its factorization.

1222421101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875171.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1222421101 is about 34963.1391754230. The cubic root of 1222421101 is about 1069.2360987177.

Adding to 1222421101 its reverse (1011242221), we get a palindrome (2233663322).

The spelling of 1222421101 in words is "one billion, two hundred twenty-two million, four hundred twenty-one thousand, one hundred one".