1201221201011 has 8 divisors (see below), whose sum is σ = 1299423834240. Its totient is φ = 1103847282432.

The previous prime is 1201221200983. The next prime is 1201221201013. The reversal of 1201221201011 is 1101021221021.

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 1201221201011 - 2¹⁰ = 1201221199987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201221201013) 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, 207175646 + ... + 207181443.

It is an arithmetic number, because the mean of its divisors is an integer number (162427979280).

Almost surely, 2^{1201221201011} is an apocalyptic number.

1201221201011 is a deficient number, since it is larger than the sum of its proper divisors (98202633229).

1201221201011 is a wasteful number, since it uses less digits than its factorization.

1201221201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414357325.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201221201011 its reverse (1101021221021), we get a palindrome (2302242422032).

The spelling of 1201221201011 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, eleven".