1201000423221 has 24 divisors (see below), whose sum is σ = 1744116042240. Its totient is φ = 796358491200.

The previous prime is 1201000423163. The next prime is 1201000423279. The reversal of 1201000423221 is 1223240001021.

It is a happy number.

1201000423221 is a `hidden beast` number, since 1 + 20 + 1 + 0 + 0 + 0 + 423 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (1201000423163) and next prime (1201000423279).

It is not a de Polignac number, because 1201000423221 - 2²⁷ = 1200866205493 is a prime.

It is a super-3 number, since 3×1201000423221³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1201000423194 and 1201000423203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201000423421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12619906 + ... + 12714716.

It is an arithmetic number, because the mean of its divisors is an integer number (72671501760).

Almost surely, 2^{1201000423221} is an apocalyptic number.

It is an amenable number.

1201000423221 is a deficient number, since it is larger than the sum of its proper divisors (543115619019).

1201000423221 is a wasteful number, since it uses less digits than its factorization.

1201000423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102377 (or 102374 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1201000423221 its reverse (1223240001021), we get a palindrome (2424240424242).

The spelling of 1201000423221 in words is "one trillion, two hundred one billion, four hundred twenty-three thousand, two hundred twenty-one".