1212015640406 has 8 divisors (see below), whose sum is σ = 1860303076104. Its totient is φ = 591914615040.

The previous prime is 1212015640387. The next prime is 1212015640421. The reversal of 1212015640406 is 6040465102121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7046602475 + ... + 7046602646.

It is an arithmetic number, because the mean of its divisors is an integer number (232537884513).

Almost surely, 2^{1212015640406} is an apocalyptic number.

1212015640406 is a deficient number, since it is larger than the sum of its proper divisors (648287435698).

1212015640406 is a wasteful number, since it uses less digits than its factorization.

1212015640406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14093205166.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 1212015640406 in words is "one trillion, two hundred twelve billion, fifteen million, six hundred forty thousand, four hundred six".