101222442 has 12 divisors (see below), whose sum is σ = 219315330. Its totient is φ = 33740808.

The previous prime is 101222431. The next prime is 101222447. The reversal of 101222442 is 244222101.

101222442 is a `hidden beast` number, since 1 + 0 + 1 + 222 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100580841 + 641601 = 10029^2 + 801^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5623469 = 101222442 / (1 + 0 + 1 + 2 + 2 + 2 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (101222447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2811717 + ... + 2811752.

Almost surely, 2^101222442 is an apocalyptic number.

101222442 is an abundant number, since it is smaller than the sum of its proper divisors (118092888).

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

101222442 is a wasteful number, since it uses less digits than its factorization.

101222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5623477 (or 5623474 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 101222442 is about 10060.9364375291. The cubic root of 101222442 is about 466.0425860741.

Adding to 101222442 its reverse (244222101), we get a palindrome (345444543).

The spelling of 101222442 in words is "one hundred one million, two hundred twenty-two thousand, four hundred forty-two".