1220102312231 has 4 divisors (see below), whose sum is σ = 1331020704264. Its totient is φ = 1109183920200.

The previous prime is 1220102312203. The next prime is 1220102312243. The reversal of 1220102312231 is 1322132010221.

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 1220102312231 - 2³⁸ = 945224405287 is a prime.

It is a super-2 number, since 2×1220102312231² (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 (1220102312281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55459196000 + ... + 55459196021.

It is an arithmetic number, because the mean of its divisors is an integer number (332755176066).

Almost surely, 2^{1220102312231} is an apocalyptic number.

1220102312231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220102312231 is a deficient number, since it is larger than the sum of its proper divisors (110918392033).

1220102312231 is a wasteful number, since it uses less digits than its factorization.

1220102312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110918392032.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1220102312231 its reverse (1322132010221), we get a palindrome (2542234322452).

The spelling of 1220102312231 in words is "one trillion, two hundred twenty billion, one hundred two million, three hundred twelve thousand, two hundred thirty-one".