1221141461463 has 96 divisors (see below), whose sum is σ = 2246880190464. Its totient is φ = 620688960000.

The previous prime is 1221141461411. The next prime is 1221141461473. The reversal of 1221141461463 is 3641641411221.

1221141461463 is a `hidden beast` number, since 1 + 2 + 21 + 1 + 4 + 14 + 614 + 6 + 3 = 666.

It is not a de Polignac number, because 1221141461463 - 2¹⁸ = 1221141199319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221141461473) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7998523 + ... + 8149763.

It is an arithmetic number, because the mean of its divisors is an integer number (23405001984).

Almost surely, 2^{1221141461463} is an apocalyptic number.

1221141461463 is a deficient number, since it is larger than the sum of its proper divisors (1025738729001).

1221141461463 is a wasteful number, since it uses less digits than its factorization.

1221141461463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151517 (or 151514 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

Adding to 1221141461463 its reverse (3641641411221), we get a palindrome (4862782872684).

The spelling of 1221141461463 in words is "one trillion, two hundred twenty-one billion, one hundred forty-one million, four hundred sixty-one thousand, four hundred sixty-three".