1220243104031 has 16 divisors (see below), whose sum is σ = 1426397990400. Its totient is φ = 1022251773408.

The previous prime is 1220243104021. The next prime is 1220243104051. The reversal of 1220243104031 is 1304013420221.

It is a cyclic number.

It is not a de Polignac number, because 1220243104031 - 2³⁴ = 1203063234847 is a prime.

It is a super-2 number, since 2×1220243104031² (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 = 1220243103988 and 1220243104006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220243104021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8467811 + ... + 8610708.

It is an arithmetic number, because the mean of its divisors is an integer number (89149874400).

Almost surely, 2^{1220243104031} is an apocalyptic number.

1220243104031 is a deficient number, since it is larger than the sum of its proper divisors (206154886369).

1220243104031 is a wasteful number, since it uses less digits than its factorization.

1220243104031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17078758.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1220243104031 its reverse (1304013420221), we get a palindrome (2524256524252).

The spelling of 1220243104031 in words is "one trillion, two hundred twenty billion, two hundred forty-three million, one hundred four thousand, thirty-one".