20120302100 has 18 divisors (see below), whose sum is σ = 43661055774. Its totient is φ = 8048120800.

The previous prime is 20120302099. The next prime is 20120302133. The reversal of 20120302100 is 120302102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1562779024 + 18557523076 = 39532^2 + 136226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100601411 + ... + 100601610.

Almost surely, 2^20120302100 is an apocalyptic number.

20120302100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120302100 is an abundant number, since it is smaller than the sum of its proper divisors (23540753674).

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

20120302100 is a wasteful number, since it uses less digits than its factorization.

20120302100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201203035 (or 201203028 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20120302100 its reverse (120302102), we get a palindrome (20240604202).

The spelling of 20120302100 in words is "twenty billion, one hundred twenty million, three hundred two thousand, one hundred".