1221432032031 has 8 divisors (see below), whose sum is σ = 1643517107760. Its totient is φ = 806817488832.

The previous prime is 1221432031979. The next prime is 1221432032039. The reversal of 1221432032031 is 1302302341221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1221432032031 - 2⁷ = 1221432031903 is a prime.

It is a super-3 number, since 3×1221432032031³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1221432031992 and 1221432032010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221432032039) 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, 1867632750 + ... + 1867633403.

It is an arithmetic number, because the mean of its divisors is an integer number (205439638470).

Almost surely, 2^{1221432032031} is an apocalyptic number.

1221432032031 is a deficient number, since it is larger than the sum of its proper divisors (422085075729).

1221432032031 is a wasteful number, since it uses less digits than its factorization.

1221432032031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735266265.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1221432032031 its reverse (1302302341221), we get a palindrome (2523734373252).

The spelling of 1221432032031 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-two million, thirty-two thousand, thirty-one".