1201001312221 has 8 divisors (see below), whose sum is σ = 1271757170880. Its totient is φ = 1130257533888.

The previous prime is 1201001312213. The next prime is 1201001312233. The reversal of 1201001312221 is 1222131001021.

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 1201001312221 - 2³ = 1201001312213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201001312195 and 1201001312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201001312821) 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, 2814991 + ... + 3213436.

It is an arithmetic number, because the mean of its divisors is an integer number (158969646360).

Almost surely, 2^{1201001312221} is an apocalyptic number.

It is an amenable number.

1201001312221 is a deficient number, since it is larger than the sum of its proper divisors (70755858659).

1201001312221 is a wasteful number, since it uses less digits than its factorization.

1201001312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040163.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1201001312221 its reverse (1222131001021), we get a palindrome (2423132313242).

The spelling of 1201001312221 in words is "one trillion, two hundred one billion, one million, three hundred twelve thousand, two hundred twenty-one".