1211203020408 has 32 divisors (see below), whose sum is σ = 3028426391760. Its totient is φ = 403678494720.

The previous prime is 1211203020371. The next prime is 1211203020409. The reversal of 1211203020408 is 8040203021121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211203020409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3313033 + ... + 3660408.

Almost surely, 2^{1211203020408} is an apocalyptic number.

It is an amenable number.

1211203020408 is an abundant number, since it is smaller than the sum of its proper divisors (1817223371352).

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

1211203020408 is a wasteful number, since it uses less digits than its factorization.

1211203020408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980687 (or 6980683 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 1211203020408 its reverse (8040203021121), we get a palindrome (9251406041529).

The spelling of 1211203020408 in words is "one trillion, two hundred eleven billion, two hundred three million, twenty thousand, four hundred eight".