1211403242044 has 24 divisors (see below), whose sum is σ = 2132139341808. Its totient is φ = 602229288960.

The previous prime is 1211403242039. The next prime is 1211403242059. The reversal of 1211403242044 is 4402423041121.

It is a super-3 number, since 3×1211403242044³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

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, 532954 + ... + 1645249.

It is an arithmetic number, because the mean of its divisors is an integer number (88839139242).

Almost surely, 2^{1211403242044} is an apocalyptic number.

It is an amenable number.

1211403242044 is a deficient number, since it is larger than the sum of its proper divisors (920736099764).

1211403242044 is a wasteful number, since it uses less digits than its factorization.

1211403242044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179005 (or 2179003 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1211403242044 its reverse (4402423041121), we get a palindrome (5613826283165).

The spelling of 1211403242044 in words is "one trillion, two hundred eleven billion, four hundred three million, two hundred forty-two thousand, forty-four".