12011202100 has 36 divisors (see below), whose sum is σ = 27597507084. Its totient is φ = 4521863680.

The previous prime is 12011202067. The next prime is 12011202101. The reversal of 12011202100 is 120211021.

It can be written as a sum of positive squares in 6 ways, for example, as 255872016 + 11755330084 = 15996^2 + 108422^2 .

It is a super-5 number, since 5×12011202100⁵ (a number of 52 digits) contains 55555 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011202101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3531007 + ... + 3534406.

It is an arithmetic number, because the mean of its divisors is an integer number (766597419).

Almost surely, 2^12011202100 is an apocalyptic number.

12011202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011202100 is an abundant number, since it is smaller than the sum of its proper divisors (15586304984).

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

12011202100 is a wasteful number, since it uses less digits than its factorization.

12011202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7065444 (or 7065437 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12011202100 its reverse (120211021), we get a palindrome (12131413121).

The spelling of 12011202100 in words is "twelve billion, eleven million, two hundred two thousand, one hundred".