20012121232200 has 288 divisors, whose sum is σ = 68221694573760. Its totient is φ = 5256050342400.

The previous prime is 20012121232193. The next prime is 20012121232223. The reversal of 20012121232200 is 223212121002.

20012121232200 is a `hidden beast` number, since 20 + 0 + 1 + 212 + 1 + 232 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1100707110 + ... + 1100725290.

Almost surely, 2^{20012121232200} is an apocalyptic number.

20012121232200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012121232200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34110847286880).

20012121232200 is an abundant number, since it is smaller than the sum of its proper divisors (48209573341560).

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

20012121232200 is a wasteful number, since it uses less digits than its factorization.

20012121232200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27397 (or 27385 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20012121232200 its reverse (223212121002), we get a palindrome (20235333353202).

The spelling of 20012121232200 in words is "twenty trillion, twelve billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred".