1211401008730 has 32 divisors (see below), whose sum is σ = 2417747004288. Its totient is φ = 433287988800.

The previous prime is 1211401008691. The next prime is 1211401008809. The reversal of 1211401008730 is 378001041121.

It is a super-3 number, since 3×1211401008730³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 90261622 + ... + 90275041.

It is an arithmetic number, because the mean of its divisors is an integer number (75554593884).

Almost surely, 2^{1211401008730} is an apocalyptic number.

1211401008730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211401008730 is a deficient number, since it is larger than the sum of its proper divisors (1206345995558).

1211401008730 is a wasteful number, since it uses less digits than its factorization.

1211401008730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180536742.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 1211401008730 its reverse (378001041121), we get a palindrome (1589402049851).

The spelling of 1211401008730 in words is "one trillion, two hundred eleven billion, four hundred one million, eight thousand, seven hundred thirty".