100212021020 has 24 divisors (see below), whose sum is σ = 214922804544. Its totient is φ = 39231939776.

The previous prime is 100212021017. The next prime is 100212021023. The reversal of 100212021020 is 20120212001.

It is a happy number.

100212021020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (100212021017) and next prime (100212021023).

It is a junction number, because it is equal to n+sod(n) for n = 100212020992 and 100212021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212021023) 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, 53303327 + ... + 53305206.

It is an arithmetic number, because the mean of its divisors is an integer number (8955116856).

Almost surely, 2^100212021020 is an apocalyptic number.

100212021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212021020 is an abundant number, since it is smaller than the sum of its proper divisors (114710783524).

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

100212021020 is a wasteful number, since it uses less digits than its factorization.

100212021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106608589 (or 106608587 counting only the distinct ones).

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

Adding to 100212021020 its reverse (20120212001), we get a palindrome (120332233021).

The spelling of 100212021020 in words is "one hundred billion, two hundred twelve million, twenty-one thousand, twenty".