20220101008 has 10 divisors (see below), whose sum is σ = 39176445734. Its totient is φ = 10110050496.

The previous prime is 20220100997. The next prime is 20220101009. The reversal of 20220101008 is 80010102202.

It can be written as a sum of positive squares in only one way, i.e., 13992997264 + 6227103744 = 118292^2 + 78912^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1263756313 = 20220101008 / (2 + 0 + 2 + 2 + 0 + 1 + 0 + 1 + 0 + 0 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 20220100982 and 20220101000.

It is not an unprimeable number, because it can be changed into a prime (20220101009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631878141 + ... + 631878172.

Almost surely, 2^20220101008 is an apocalyptic number.

It is an amenable number.

20220101008 is a deficient number, since it is larger than the sum of its proper divisors (18956344726).

20220101008 is a wasteful number, since it uses less digits than its factorization.

20220101008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263756321 (or 1263756315 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The spelling of 20220101008 in words is "twenty billion, two hundred twenty million, one hundred one thousand, eight".