1211042145444 has 24 divisors (see below), whose sum is σ = 2852174027808. Its totient is φ = 399907997760.

The previous prime is 1211042145431. The next prime is 1211042145461. The reversal of 1211042145444 is 4445412401121.

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, 471588337 + ... + 471590904.

It is an arithmetic number, because the mean of its divisors is an integer number (118840584492).

Almost surely, 2^{1211042145444} is an apocalyptic number.

It is an amenable number.

1211042145444 is an abundant number, since it is smaller than the sum of its proper divisors (1641131882364).

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

1211042145444 is a wasteful number, since it uses less digits than its factorization.

1211042145444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943179355 (or 943179353 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

Adding to 1211042145444 its reverse (4445412401121), we get a palindrome (5656454546565).

The spelling of 1211042145444 in words is "one trillion, two hundred eleven billion, forty-two million, one hundred forty-five thousand, four hundred forty-four".