101216490 has 32 divisors (see below), whose sum is σ = 243677376. Its totient is φ = 26906880.

The previous prime is 101216483. The next prime is 101216501. The reversal of 101216490 is 94612101.

It is a self number, because there is not a number n which added to its sum of digits gives 101216490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4834 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (7614918).

Almost surely, 2^101216490 is an apocalyptic number.

101216490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101216490 is an abundant number, since it is smaller than the sum of its proper divisors (142460886).

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

101216490 is a wasteful number, since it uses less digits than its factorization.

101216490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 101216490 is about 10060.6406356653. The cubic root of 101216490 is about 466.0334512756.

Adding to 101216490 its reverse (94612101), we get a palindrome (195828591).

The spelling of 101216490 in words is "one hundred one million, two hundred sixteen thousand, four hundred ninety".