42220101 has 32 divisors (see below), whose sum is σ = 70622208. Its totient is φ = 21795840.

The previous prime is 42220099. The next prime is 42220103. The reversal of 42220101 is 10102224.

It is an interprime number because it is at equal distance from previous prime (42220099) and next prime (42220103).

It is not a de Polignac number, because 42220101 - 2¹ = 42220099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44110 + ... + 45056.

It is an arithmetic number, because the mean of its divisors is an integer number (2206944).

Almost surely, 2^42220101 is an apocalyptic number.

It is an amenable number.

42220101 is a deficient number, since it is larger than the sum of its proper divisors (28402107).

42220101 is a wasteful number, since it uses less digits than its factorization.

42220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 42220101 is about 6497.6996698832. The cubic root of 42220101 is about 348.2088108030.

Adding to 42220101 its reverse (10102224), we get a palindrome (52322325).

The spelling of 42220101 in words is "forty-two million, two hundred twenty thousand, one hundred one".