100220211020 has 24 divisors (see below), whose sum is σ = 210572886384. Its totient is φ = 40067047616.

The previous prime is 100220210999. The next prime is 100220211041. The reversal of 100220211020 is 20112022001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100220210999) and next prime (100220211041).

It is a junction number, because it is equal to n+sod(n) for n = 100220210992 and 100220211010.

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, 1275707 + ... + 1351986.

It is an arithmetic number, because the mean of its divisors is an integer number (8773870266).

Almost surely, 2^100220211020 is an apocalyptic number.

100220211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100220211020 is an abundant number, since it is smaller than the sum of its proper divisors (110352675364).

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

100220211020 is a wasteful number, since it uses less digits than its factorization.

100220211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629609 (or 2629607 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100220211020 its reverse (20112022001), we get a palindrome (120332233021).

The spelling of 100220211020 in words is "one hundred billion, two hundred twenty million, two hundred eleven thousand, twenty".