1211513670351 has 48 divisors (see below), whose sum is σ = 1796557771008. Its totient is φ = 786259353600.

The previous prime is 1211513670337. The next prime is 1211513670377. The reversal of 1211513670351 is 1530763151121.

1211513670351 is a `hidden beast` number, since 1 + 21 + 1 + 513 + 6 + 70 + 3 + 51 = 666.

It is not a de Polignac number, because 1211513670351 - 2¹⁵ = 1211513637583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211513270351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 467584066 + ... + 467586656.

It is an arithmetic number, because the mean of its divisors is an integer number (37428286896).

Almost surely, 2^{1211513670351} is an apocalyptic number.

1211513670351 is a deficient number, since it is larger than the sum of its proper divisors (585044100657).

1211513670351 is a wasteful number, since it uses less digits than its factorization.

1211513670351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4912 (or 4909 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The spelling of 1211513670351 in words is "one trillion, two hundred eleven billion, five hundred thirteen million, six hundred seventy thousand, three hundred fifty-one".