212001144342 has 128 divisors (see below), whose sum is σ = 465691451904. Its totient is φ = 63952171008.

The previous prime is 212001144337. The next prime is 212001144349. The reversal of 212001144342 is 243441100212.

It is a super-2 number, since 2×212001144342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001144349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 600569638 + ... + 600569990.

It is an arithmetic number, because the mean of its divisors is an integer number (3638214468).

Almost surely, 2^212001144342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212001144342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232845725952).

212001144342 is an abundant number, since it is smaller than the sum of its proper divisors (253690307562).

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

212001144342 is a wasteful number, since it uses less digits than its factorization.

212001144342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212001144342 its reverse (243441100212), we get a palindrome (455442244554).

The spelling of 212001144342 in words is "two hundred twelve billion, one million, one hundred forty-four thousand, three hundred forty-two".