211142421244 has 12 divisors (see below), whose sum is σ = 369662099800. Its totient is φ = 105524678448.

The previous prime is 211142421199. The next prime is 211142421251. The reversal of 211142421244 is 442124241112.

It is a super-2 number, since 2×211142421244² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11622834 + ... + 11640985.

Almost surely, 2^211142421244 is an apocalyptic number.

It is an amenable number.

211142421244 is a deficient number, since it is larger than the sum of its proper divisors (158519678556).

211142421244 is a wasteful number, since it uses less digits than its factorization.

211142421244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23266092 (or 23266090 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

Adding to 211142421244 its reverse (442124241112), we get a palindrome (653266662356).

The spelling of 211142421244 in words is "two hundred eleven billion, one hundred forty-two million, four hundred twenty-one thousand, two hundred forty-four".