1212000201020 has 72 divisors (see below), whose sum is σ = 3062838018240. Its totient is φ = 401213850240.

The previous prime is 1212000200977. The next prime is 1212000201031. The reversal of 1212000201020 is 201020002121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212000200992 and 1212000201010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21294596 + ... + 21351435.

It is an arithmetic number, because the mean of its divisors is an integer number (42539416920).

Almost surely, 2^{1212000201020} is an apocalyptic number.

1212000201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212000201020 is an abundant number, since it is smaller than the sum of its proper divisors (1850837817220).

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

1212000201020 is a wasteful number, since it uses less digits than its factorization.

1212000201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42646083 (or 42646074 counting only the distinct ones).

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

Adding to 1212000201020 its reverse (201020002121), we get a palindrome (1413020203141).

The spelling of 1212000201020 in words is "one trillion, two hundred twelve billion, two hundred one thousand, twenty".