1222400106 has 32 divisors (see below), whose sum is σ = 2760984000. Its totient is φ = 400785840.

The previous prime is 1222400063. The next prime is 1222400161. The reversal of 1222400106 is 6010042221.

It is a super-2 number, since 2×1222400106² = 2988524038297622472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182256 + ... + 188843.

It is an arithmetic number, because the mean of its divisors is an integer number (86280750).

Almost surely, 2^1222400106 is an apocalyptic number.

1222400106 is an abundant number, since it is smaller than the sum of its proper divisors (1538583894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222400106 is a wasteful number, since it uses less digits than its factorization.

1222400106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371171 (or 371165 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1222400106 is about 34962.8389293547. The cubic root of 1222400106 is about 1069.2299773300.

Adding to 1222400106 its reverse (6010042221), we get a palindrome (7232442327).

The spelling of 1222400106 in words is "one billion, two hundred twenty-two million, four hundred thousand, one hundred six".