1201100221243 has 8 divisors (see below), whose sum is σ = 1293501112848. Its totient is φ = 1108700553504.

The previous prime is 1201100221241. The next prime is 1201100221259. The reversal of 1201100221243 is 3421220011021.

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 1201100221243 - 2¹ = 1201100221241 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 1201100221243.

It is not an unprimeable number, because it can be changed into a prime (1201100221241) 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, 3353121 + ... + 3693997.

It is an arithmetic number, because the mean of its divisors is an integer number (161687639106).

Almost surely, 2^{1201100221243} is an apocalyptic number.

1201100221243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201100221243 is a deficient number, since it is larger than the sum of its proper divisors (92400891605).

1201100221243 is a wasteful number, since it uses less digits than its factorization.

1201100221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611933.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1201100221243 its reverse (3421220011021), we get a palindrome (4622320232264).

The spelling of 1201100221243 in words is "one trillion, two hundred one billion, one hundred million, two hundred twenty-one thousand, two hundred forty-three".