1213030021003 has 4 divisors (see below), whose sum is σ = 1213482140728. Its totient is φ = 1212577901280.

The previous prime is 1213030020973. The next prime is 1213030021013. The reversal of 1213030021003 is 3001200303121.

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 1213030021003 - 2⁵ = 1213030020971 is a prime.

It is a super-2 number, since 2×1213030021003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213030021013) 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, 226055838 + ... + 226061203.

It is an arithmetic number, because the mean of its divisors is an integer number (303370535182).

Almost surely, 2^{1213030021003} is an apocalyptic number.

1213030021003 is a deficient number, since it is larger than the sum of its proper divisors (452119725).

1213030021003 is an equidigital number, since it uses as much as digits as its factorization.

1213030021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452119724.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1213030021003 its reverse (3001200303121), we get a palindrome (4214230324124).

The spelling of 1213030021003 in words is "one trillion, two hundred thirteen billion, thirty million, twenty-one thousand, three".