1221230103213 has 8 divisors (see below), whose sum is σ = 1628364964576. Its totient is φ = 814124322000.

The previous prime is 1221230103211. The next prime is 1221230103319. The reversal of 1221230103213 is 3123010321221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1221230103213 - 2¹ = 1221230103211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221230103213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221230103211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7171858 + ... + 7340163.

It is an arithmetic number, because the mean of its divisors is an integer number (203545620572).

Almost surely, 2^{1221230103213} is an apocalyptic number.

It is an amenable number.

1221230103213 is a deficient number, since it is larger than the sum of its proper divisors (407134861363).

1221230103213 is a wasteful number, since it uses less digits than its factorization.

1221230103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14540075.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1221230103213 its reverse (3123010321221), we get a palindrome (4344240424434).

The spelling of 1221230103213 in words is "one trillion, two hundred twenty-one billion, two hundred thirty million, one hundred three thousand, two hundred thirteen".