11221406890 has 16 divisors (see below), whose sum is σ = 20529657000. Its totient is φ = 4414979520.

The previous prime is 11221406831. The next prime is 11221406909. The reversal of 11221406890 is 9860412211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5536699281 + 5684707609 = 74409^2 + 75397^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9197265 + ... + 9198484.

Almost surely, 2^11221406890 is an apocalyptic number.

11221406890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221406890 is a deficient number, since it is larger than the sum of its proper divisors (9308250110).

11221406890 is a wasteful number, since it uses less digits than its factorization.

11221406890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18395817.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 11221406890 in words is "eleven billion, two hundred twenty-one million, four hundred six thousand, eight hundred ninety".