211142321444 has 24 divisors (see below), whose sum is σ = 375104378208. Its totient is φ = 103970401920.

The previous prime is 211142321419. The next prime is 211142321471. The reversal of 211142321444 is 444123241112.

It is a super-2 number, since 2×211142321444² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044284 + ... + 1229964.

It is an arithmetic number, because the mean of its divisors is an integer number (15629349092).

Almost surely, 2^211142321444 is an apocalyptic number.

It is an amenable number.

211142321444 is a deficient number, since it is larger than the sum of its proper divisors (163962056764).

211142321444 is a wasteful number, since it uses less digits than its factorization.

211142321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189995 (or 189993 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

Adding to 211142321444 its reverse (444123241112), we get a palindrome (655265562556).

The spelling of 211142321444 in words is "two hundred eleven billion, one hundred forty-two million, three hundred twenty-one thousand, four hundred forty-four".