1011001201231 has 8 divisors (see below), whose sum is σ = 1159145155584. Its totient is φ = 863786049720.

The previous prime is 1011001201207. The next prime is 1011001201271. The reversal of 1011001201231 is 1321021001101.

It is a happy number.

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 1011001201231 - 2²¹ = 1010999104079 is a prime.

It is a super-2 number, since 2×1011001201231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011001201271) 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, 232198375 + ... + 232202728.

It is an arithmetic number, because the mean of its divisors is an integer number (144893144448).

Almost surely, 2^{1011001201231} is an apocalyptic number.

1011001201231 is a deficient number, since it is larger than the sum of its proper divisors (148143954353).

1011001201231 is an equidigital number, since it uses as much as digits as its factorization.

1011001201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464401421.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1011001201231 its reverse (1321021001101), we get a palindrome (2332022202332).

The spelling of 1011001201231 in words is "one trillion, eleven billion, one million, two hundred one thousand, two hundred thirty-one".