1211200421333 has 16 divisors (see below), whose sum is σ = 1401876077184. Its totient is φ = 1025016982080.

The previous prime is 1211200421317. The next prime is 1211200421341. The reversal of 1211200421333 is 3331240021121.

It is not a de Polignac number, because 1211200421333 - 2⁴ = 1211200421317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211200421299 and 1211200421308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211200481333) 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, 3171710 + ... + 3533007.

It is an arithmetic number, because the mean of its divisors is an integer number (87617254824).

Almost surely, 2^{1211200421333} is an apocalyptic number.

It is an amenable number.

1211200421333 is a deficient number, since it is larger than the sum of its proper divisors (190675655851).

1211200421333 is a wasteful number, since it uses less digits than its factorization.

1211200421333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705052.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1211200421333 its reverse (3331240021121), we get a palindrome (4542440442454).

The spelling of 1211200421333 in words is "one trillion, two hundred eleven billion, two hundred million, four hundred twenty-one thousand, three hundred thirty-three".