1223010221131 has 4 divisors (see below), whose sum is σ = 1223036916192. Its totient is φ = 1222983526072.

The previous prime is 1223010221119. The next prime is 1223010221161. The reversal of 1223010221131 is 1311220103221.

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 1223010221131 - 2²³ = 1223001832523 is a prime.

It is a super-2 number, since 2×1223010221131² (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 = 1223010221099 and 1223010221108.

It is not an unprimeable number, because it can be changed into a prime (1223010221161) 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, 13278691 + ... + 13370476.

It is an arithmetic number, because the mean of its divisors is an integer number (305759229048).

Almost surely, 2^{1223010221131} is an apocalyptic number.

1223010221131 is a deficient number, since it is larger than the sum of its proper divisors (26695061).

1223010221131 is an equidigital number, since it uses as much as digits as its factorization.

1223010221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26695060.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1223010221131 its reverse (1311220103221), we get a palindrome (2534230324352).

The spelling of 1223010221131 in words is "one trillion, two hundred twenty-three billion, ten million, two hundred twenty-one thousand, one hundred thirty-one".