11217090 has 16 divisors (see below), whose sum is σ = 26921088. Its totient is φ = 2991216.

The previous prime is 11217061. The next prime is 11217091. The reversal of 11217090 is 9071211.

It is not an unprimeable number, because it can be changed into a prime (11217091) 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, 186922 + ... + 186981.

It is an arithmetic number, because the mean of its divisors is an integer number (1682568).

Almost surely, 2^11217090 is an apocalyptic number.

11217090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11217090 is an abundant number, since it is smaller than the sum of its proper divisors (15703998).

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

11217090 is a wasteful number, since it uses less digits than its factorization.

11217090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373913.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 11217090 is about 3349.1924399771. The cubic root of 11217090 is about 223.8515305475.

Adding to 11217090 its product of nonzero digits (126), we get a triangular number (11217216 = T₄₇₃₆).

The spelling of 11217090 in words is "eleven million, two hundred seventeen thousand, ninety".