1211230134144 has 96 divisors (see below), whose sum is σ = 3494542521600. Its totient is φ = 402689071104.

The previous prime is 1211230134137. The next prime is 1211230134173. The reversal of 1211230134144 is 4414310321121.

It is a happy number.

1211230134144 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 230 + 13 + 414 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1211230134144² (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 11 ways as a sum of consecutive naturals, for example, 931389 + ... + 1813820.

It is an arithmetic number, because the mean of its divisors is an integer number (36401484600).

Almost surely, 2^{1211230134144} is an apocalyptic number.

It is an amenable number.

1211230134144 is an abundant number, since it is smaller than the sum of its proper divisors (2283312387456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211230134144 is a wasteful number, since it uses less digits than its factorization.

1211230134144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745612 (or 2745597 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1211230134144 its reverse (4414310321121), we get a palindrome (5625540455265).

The spelling of 1211230134144 in words is "one trillion, two hundred eleven billion, two hundred thirty million, one hundred thirty-four thousand, one hundred forty-four".