2190222921 has 8 divisors (see below), whose sum is σ = 2920676224. Its totient is φ = 1459959120.

The previous prime is 2190222919. The next prime is 2190222949. The reversal of 2190222921 is 1292220912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2190222921 - 2¹ = 2190222919 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2190222961) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17761 + ... + 68526.

It is an arithmetic number, because the mean of its divisors is an integer number (365084528).

Almost surely, 2^2190222921 is an apocalyptic number.

It is an amenable number.

2190222921 is a deficient number, since it is larger than the sum of its proper divisors (730453303).

2190222921 is an equidigital number, since it uses as much as digits as its factorization.

2190222921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94751.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 2190222921 is about 46799.8175316956. The cubic root of 2190222921 is about 1298.6619212272.

The spelling of 2190222921 in words is "two billion, one hundred ninety million, two hundred twenty-two thousand, nine hundred twenty-one".