1201747475021 has 8 divisors (see below), whose sum is σ = 1202164334784. Its totient is φ = 1201330690560.

The previous prime is 1201747475017. The next prime is 1201747475029. The reversal of 1201747475021 is 1205747471021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201747475021 - 2² = 1201747475017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201747475021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201747475029) 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, 62558600 + ... + 62577806.

It is an arithmetic number, because the mean of its divisors is an integer number (150270541848).

Almost surely, 2^{1201747475021} is an apocalyptic number.

It is an amenable number.

1201747475021 is a deficient number, since it is larger than the sum of its proper divisors (416859763).

1201747475021 is a wasteful number, since it uses less digits than its factorization.

1201747475021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37651.

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 1201747475021 in words is "one trillion, two hundred one billion, seven hundred forty-seven million, four hundred seventy-five thousand, twenty-one".