20022210100 has 36 divisors (see below), whose sum is σ = 43832717964. Its totient is φ = 7938004480.

The previous prime is 20022210083. The next prime is 20022210121. The reversal of 20022210100 is 101222002.

It can be written as a sum of positive squares in 6 ways, for example, as 4963484304 + 15058725796 = 70452^2 + 122714^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874639 + ... + 897238.

It is an arithmetic number, because the mean of its divisors is an integer number (1217575499).

Almost surely, 2^20022210100 is an apocalyptic number.

20022210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022210100 is an abundant number, since it is smaller than the sum of its proper divisors (23810507864).

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

20022210100 is a wasteful number, since it uses less digits than its factorization.

20022210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772004 (or 1771997 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20022210100 its reverse (101222002), we get a palindrome (20123432102).

The spelling of 20022210100 in words is "twenty billion, twenty-two million, two hundred ten thousand, one hundred".