1201668429123 has 24 divisors (see below), whose sum is σ = 1767844919568. Its totient is φ = 786419105472.

The previous prime is 1201668429053. The next prime is 1201668429131. The reversal of 1201668429123 is 3219248661021.

1201668429123 is a `hidden beast` number, since 1 + 201 + 6 + 6 + 8 + 429 + 12 + 3 = 666.

It is not a de Polignac number, because 1201668429123 - 2²⁰ = 1201667380547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201668429133) 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 23 ways as a sum of consecutive naturals, for example, 5005840 + ... + 5240397.

It is an arithmetic number, because the mean of its divisors is an integer number (73660204982).

Almost surely, 2^{1201668429123} is an apocalyptic number.

1201668429123 is a deficient number, since it is larger than the sum of its proper divisors (566176490445).

1201668429123 is a wasteful number, since it uses less digits than its factorization.

1201668429123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10246483 (or 10246480 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 1201668429123 in words is "one trillion, two hundred one billion, six hundred sixty-eight million, four hundred twenty-nine thousand, one hundred twenty-three".