1220231132011 has 8 divisors (see below), whose sum is σ = 1333687158144. Its totient is φ = 1111405964160.

The previous prime is 1220231131993. The next prime is 1220231132069. The reversal of 1220231132011 is 1102311320221.

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 1220231132011 - 2¹⁷ = 1220231000939 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 1220231132011.

It is not an unprimeable number, because it can be changed into a prime (1220234132011) 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, 1157714020 + ... + 1157715073.

It is an arithmetic number, because the mean of its divisors is an integer number (166710894768).

Almost surely, 2^{1220231132011} is an apocalyptic number.

1220231132011 is a deficient number, since it is larger than the sum of its proper divisors (113456026133).

1220231132011 is a wasteful number, since it uses less digits than its factorization.

1220231132011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315429141.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1220231132011 its reverse (1102311320221), we get a palindrome (2322542452232).

The spelling of 1220231132011 in words is "one trillion, two hundred twenty billion, two hundred thirty-one million, one hundred thirty-two thousand, eleven".