1201231103331 has 64 divisors (see below), whose sum is σ = 1960197120000. Its totient is φ = 639023012352.

The previous prime is 1201231103269. The next prime is 1201231103351. The reversal of 1201231103331 is 1333011321021.

It is a happy number.

It is not a de Polignac number, because 1201231103331 - 2¹¹ = 1201231101283 is a prime.

It is a super-2 number, since 2×1201231103331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1201231103298 and 1201231103307.

It is not an unprimeable number, because it can be changed into a prime (1201231103351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72709890 + ... + 72726408.

It is an arithmetic number, because the mean of its divisors is an integer number (30628080000).

Almost surely, 2^{1201231103331} is an apocalyptic number.

1201231103331 is a deficient number, since it is larger than the sum of its proper divisors (758966016669).

1201231103331 is a wasteful number, since it uses less digits than its factorization.

1201231103331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19696.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1201231103331 its reverse (1333011321021), we get a palindrome (2534242424352).

The spelling of 1201231103331 in words is "one trillion, two hundred one billion, two hundred thirty-one million, one hundred three thousand, three hundred thirty-one".