1211220321302 has 8 divisors (see below), whose sum is σ = 1817968138896. Its totient is φ = 605230941672.

The previous prime is 1211220321299. The next prime is 1211220321319. The reversal of 1211220321302 is 2031230221121.

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

It is a super-2 number, since 2×1211220321302² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189605498 + ... + 189611885.

It is an arithmetic number, because the mean of its divisors is an integer number (227246017362).

Almost surely, 2^{1211220321302} is an apocalyptic number.

1211220321302 is a deficient number, since it is larger than the sum of its proper divisors (606747817594).

1211220321302 is a wasteful number, since it uses less digits than its factorization.

1211220321302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379218982.

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

Adding to 1211220321302 its reverse (2031230221121), we get a palindrome (3242450542423).

The spelling of 1211220321302 in words is "one trillion, two hundred eleven billion, two hundred twenty million, three hundred twenty-one thousand, three hundred two".