222021099 has 24 divisors (see below), whose sum is σ = 341664960. Its totient is φ = 138525552.

The previous prime is 222021077. The next prime is 222021103. The reversal of 222021099 is 990120222.

It is not a de Polignac number, because 222021099 - 2⁵ = 222021067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222021199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6372 + ... + 22014.

It is an arithmetic number, because the mean of its divisors is an integer number (14236040).

Almost surely, 2^222021099 is an apocalyptic number.

222021099 is a deficient number, since it is larger than the sum of its proper divisors (119643861).

222021099 is a wasteful number, since it uses less digits than its factorization.

222021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15751 (or 15748 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 222021099 is about 14900.3724450096. The cubic root of 222021099 is about 605.5240765476.

The spelling of 222021099 in words is "two hundred twenty-two million, twenty-one thousand, ninety-nine".