1211432422144 has 108 divisors (see below), whose sum is σ = 2859045269808. Its totient is φ = 510673766400.

The previous prime is 1211432422093. The next prime is 1211432422147. The reversal of 1211432422144 is 4412242341121.

It is a super-3 number, since 3×1211432422144³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211432422147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26412 + ... + 1556779.

Almost surely, 2^{1211432422144} is an apocalyptic number.

1211432422144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211432422144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429522634904).

1211432422144 is an abundant number, since it is smaller than the sum of its proper divisors (1647612847664).

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

1211432422144 is an equidigital number, since it uses as much as digits as its factorization.

1211432422144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583282 (or 1583261 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

Adding to 1211432422144 its reverse (4412242341121), we get a palindrome (5623674763265).

The spelling of 1211432422144 in words is "one trillion, two hundred eleven billion, four hundred thirty-two million, four hundred twenty-two thousand, one hundred forty-four".