1220023001213 has 2 divisors, whose sum is σ = 1220023001214. Its totient is φ = 1220023001212.

The previous prime is 1220023001207. The next prime is 1220023001237. The reversal of 1220023001213 is 3121003200221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203929034169 + 16093967044 = 1097237^2 + 126862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220023001213 - 2³² = 1215728033917 is a prime.

It is a super-2 number, since 2×1220023001213² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220023001191 and 1220023001200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220023001203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610011500606 + 610011500607.

It is an arithmetic number, because the mean of its divisors is an integer number (610011500607).

Almost surely, 2^{1220023001213} is an apocalyptic number.

It is an amenable number.

1220023001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220023001213 is an equidigital number, since it uses as much as digits as its factorization.

1220023001213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1220023001213 its reverse (3121003200221), we get a palindrome (4341026201434).

The spelling of 1220023001213 in words is "one trillion, two hundred twenty billion, twenty-three million, one thousand, two hundred thirteen".