20222666810 has 16 divisors (see below), whose sum is σ = 36494382600. Its totient is φ = 8068270656.

The previous prime is 20222666743. The next prime is 20222666851. The reversal of 20222666810 is 1866622202.

It can be written as a sum of positive squares in 4 ways, for example, as 16705821001 + 3516845809 = 129251^2 + 59303^2 .

It is a super-2 number, since 2×20222666810² (a number of 21 digits) contains 22 as substring.

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, 2595425 + ... + 2603204.

Almost surely, 2^20222666810 is an apocalyptic number.

20222666810 is a deficient number, since it is larger than the sum of its proper divisors (16271715790).

20222666810 is a wasteful number, since it uses less digits than its factorization.

20222666810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199025.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 20222666810 in words is "twenty billion, two hundred twenty-two million, six hundred sixty-six thousand, eight hundred ten".