1212021406533 has 8 divisors (see below), whose sum is σ = 1846889762368. Its totient is φ = 692583660864.

The previous prime is 1212021406499. The next prime is 1212021406601. The reversal of 1212021406533 is 3356041202121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212021406533 - 2¹⁴ = 1212021390149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212021406533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212021406133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28857652516 + ... + 28857652557.

It is an arithmetic number, because the mean of its divisors is an integer number (230861220296).

Almost surely, 2^{1212021406533} is an apocalyptic number.

It is an amenable number.

1212021406533 is a deficient number, since it is larger than the sum of its proper divisors (634868355835).

1212021406533 is an equidigital number, since it uses as much as digits as its factorization.

1212021406533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57715305083.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1212021406533 its reverse (3356041202121), we get a palindrome (4568062608654).

The spelling of 1212021406533 in words is "one trillion, two hundred twelve billion, twenty-one million, four hundred six thousand, five hundred thirty-three".