100022020 has 24 divisors (see below), whose sum is σ = 240053184. Its totient is φ = 34293216.

The previous prime is 100022003. The next prime is 100022029. The reversal of 100022020 is 20220001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 100021994 and 100022012.

It is not an unprimeable number, because it can be changed into a prime (100022029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357082 + ... + 357361.

It is an arithmetic number, because the mean of its divisors is an integer number (10002216).

Almost surely, 2^100022020 is an apocalyptic number.

100022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100022020 is an abundant number, since it is smaller than the sum of its proper divisors (140031164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100022020 is a wasteful number, since it uses less digits than its factorization.

100022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714459 (or 714457 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 100022020 is about 10001.1009393966. The cubic root of 100022020 is about 464.1929501229.

Adding to 100022020 its reverse (20220001), we get a palindrome (120242021).

The spelling of 100022020 in words is "one hundred million, twenty-two thousand, twenty".