1221034143031 has 4 divisors (see below), whose sum is σ = 1221735485464. Its totient is φ = 1220332800600.

The previous prime is 1221034143019. The next prime is 1221034143037. The reversal of 1221034143031 is 1303414301221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1221034143031 - 2³³ = 1212444208439 is a prime.

It is a super-2 number, since 2×1221034143031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221034142987 and 1221034143005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221034143037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350668605 + ... + 350672086.

It is an arithmetic number, because the mean of its divisors is an integer number (305433871366).

Almost surely, 2^{1221034143031} is an apocalyptic number.

1221034143031 is a deficient number, since it is larger than the sum of its proper divisors (701342433).

1221034143031 is an equidigital number, since it uses as much as digits as its factorization.

1221034143031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701342432.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1221034143031 its reverse (1303414301221), we get a palindrome (2524448444252).

The spelling of 1221034143031 in words is "one trillion, two hundred twenty-one billion, thirty-four million, one hundred forty-three thousand, thirty-one".