1213051481897 has 8 divisors (see below), whose sum is σ = 1242307747296. Its totient is φ = 1183842751392.

The previous prime is 1213051481861. The next prime is 1213051482001. The reversal of 1213051481897 is 7981841503121.

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 1213051481897 - 2³⁴ = 1195871612713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213051481797) 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, 11832068 + ... + 11934149.

It is an arithmetic number, because the mean of its divisors is an integer number (155288468412).

Almost surely, 2^{1213051481897} is an apocalyptic number.

It is an amenable number.

1213051481897 is a deficient number, since it is larger than the sum of its proper divisors (29256265399).

1213051481897 is a wasteful number, since it uses less digits than its factorization.

1213051481897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23767447.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 1213051481897 in words is "one trillion, two hundred thirteen billion, fifty-one million, four hundred eighty-one thousand, eight hundred ninety-seven".