1212120020203 has 16 divisors (see below), whose sum is σ = 1394549360640. Its totient is φ = 1045912003200.

The previous prime is 1212120020191. The next prime is 1212120020213. The reversal of 1212120020203 is 3020200212121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1212120020203 - 2¹³ = 1212120012011 is a prime.

It is a super-2 number, since 2×1212120020203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212120020213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60517303 + ... + 60537328.

It is an arithmetic number, because the mean of its divisors is an integer number (87159335040).

Almost surely, 2^{1212120020203} is an apocalyptic number.

1212120020203 is a deficient number, since it is larger than the sum of its proper divisors (182429340437).

1212120020203 is a wasteful number, since it uses less digits than its factorization.

1212120020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121054698.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1212120020203 its reverse (3020200212121), we get a palindrome (4232320232324).

The spelling of 1212120020203 in words is "one trillion, two hundred twelve billion, one hundred twenty million, twenty thousand, two hundred three".