1213450211251 has 8 divisors (see below), whose sum is σ = 1266246178560. Its totient is φ = 1160657349192.

The previous prime is 1213450211221. The next prime is 1213450211273. The reversal of 1213450211251 is 1521120543121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213450211251 - 2⁵ = 1213450211219 is a prime.

It is a super-2 number, since 2×1213450211251² (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 (1213450211221) 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, 40536 + ... + 1558378.

It is an arithmetic number, because the mean of its divisors is an integer number (158280772320).

Almost surely, 2^{1213450211251} is an apocalyptic number.

1213450211251 is a deficient number, since it is larger than the sum of its proper divisors (52795967309).

1213450211251 is a wasteful number, since it uses less digits than its factorization.

1213450211251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552625.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1213450211251 its reverse (1521120543121), we get a palindrome (2734570754372).

The spelling of 1213450211251 in words is "one trillion, two hundred thirteen billion, four hundred fifty million, two hundred eleven thousand, two hundred fifty-one".