1201011011983 has 8 divisors (see below), whose sum is σ = 1243378735200. Its totient is φ = 1158706858848.

The previous prime is 1201011011971. The next prime is 1201011012007. The reversal of 1201011011983 is 3891101101021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201011011983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201011012983) 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, 15854068 + ... + 15929641.

It is an arithmetic number, because the mean of its divisors is an integer number (155422341900).

Almost surely, 2^{1201011011983} is an apocalyptic number.

1201011011983 is a deficient number, since it is larger than the sum of its proper divisors (42367723217).

1201011011983 is a wasteful number, since it uses less digits than its factorization.

1201011011983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31785041.

The product of its (nonzero) digits is 432, while the sum is 28.

The spelling of 1201011011983 in words is "one trillion, two hundred one billion, eleven million, eleven thousand, nine hundred eighty-three".