1211320101030 has 128 divisors (see below), whose sum is σ = 3371147942400. Its totient is φ = 275875067904.

The previous prime is 1211320101023. The next prime is 1211320101077. The reversal of 1211320101030 is 301010231121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 1157160 + ... + 1939499.

It is an arithmetic number, because the mean of its divisors is an integer number (26337093300).

Almost surely, 2^{1211320101030} is an apocalyptic number.

1211320101030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211320101030 is an abundant number, since it is smaller than the sum of its proper divisors (2159827841370).

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

1211320101030 is a wasteful number, since it uses less digits than its factorization.

1211320101030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096758.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1211320101030 its reverse (301010231121), we get a palindrome (1512330332151).

The spelling of 1211320101030 in words is "one trillion, two hundred eleven billion, three hundred twenty million, one hundred one thousand, thirty".